CVE-2026-29169

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.

This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.(CVE-2026-29169)

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

Buffer Over-read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.

This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.(CVE-2026-29169)

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

Buffer Over-read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.

This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.(CVE-2026-29169)

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

Buffer Over-read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.

This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.(CVE-2026-29169)

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33007)

HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers.

This issue affects Apache HTTP Server: from through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33523)

Out-of-bounds Read vulnerability in mod_proxy_ajp of

Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33857)

Buffer Over-read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.

This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.(CVE-2026-29169)

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33007)

HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers.

This issue affects Apache HTTP Server: from through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33523)

Out-of-bounds Read vulnerability in mod_proxy_ajp of

Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33857)

Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34032)

Buffer Over-read vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)

• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)

• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

Bug Fix(es) and Enhancement(s):

• address Moderate severity issues from httpd 2.4.68 [rhel-10.2.z] (JIRA:Rocky Linux-184518)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

• Apache HTTP Server: mod_rewrite: Apache HTTP Server: Privilege Escalation via .htaccess file manipulation (CVE-2026-24072)

• httpd: mod_auth_digest: timing attack allows a bypass of digest authentication (CVE-2026-33006)

• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)

• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

• httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server (CVE-2026-44186)

• httpd: Apache httpd mod_dav_fs: Denial of Service due to path handling issue (CVE-2026-42535)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)

• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

• httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)

• httpd: Apache HTTP Server: Local .htaccess authors can read files with httpd user privileges (CVE-2026-44119)

Bug Fix(es) and Enhancement(s):

• address Moderate severity issues from httpd 2.4.68 [rhel-9.8.z] (JIRA:Rocky Linux-184520)

• mod_proxy_html regression in CVE-2026-34355 fix [rhel-9.8.z] (JIRA:Rocky Linux-192752)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)

• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

• httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server (CVE-2026-44186)

• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)

• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

• httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)

Bug Fix(es) and Enhancement(s):

• mod_proxy_html regression in CVE-2026-34355 fix [rhel-8.10.z] (JIRA:Rocky Linux-192751)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)
• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)
• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

Bug Fix(es) and Enhancement(s):

• address Moderate severity issues from httpd 2.4.68 [almalinux-10.2.z] (JIRA:AlmaLinux-184518)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
• Apache HTTP Server: mod_rewrite: Apache HTTP Server: Privilege Escalation via .htaccess file manipulation (CVE-2026-24072)
• httpd: mod_auth_digest: timing attack allows a bypass of digest authentication (CVE-2026-33006)
• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)
• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
• httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server (CVE-2026-44186)
• httpd: Apache httpd mod_dav_fs: Denial of Service due to path handling issue (CVE-2026-42535)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)
• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)
• httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)
• httpd: Apache HTTP Server: Local .htaccess authors can read files with httpd user privileges (CVE-2026-44119)

Bug Fix(es) and Enhancement(s):

• address Moderate severity issues from httpd 2.4.68 [almalinux-9.8.z] (JIRA:AlmaLinux-184520)
• mod_proxy_html regression in CVE-2026-34355 fix [almalinux-9.8.z] (JIRA:AlmaLinux-192752)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

• httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
• httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
• httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server (CVE-2026-44185)
• httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
• httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server (CVE-2026-44186)
• httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc (CVE-2026-42536)
• httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)
• httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)

Bug Fix(es) and Enhancement(s):

• mod_proxy_html regression in CVE-2026-34355 fix [almalinux-8.10.z] (JIRA:AlmaLinux-192751)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

• CVE-2026-24072: fix mod_rewrite ap_expr privilege escalation in htaccess
• CVE-2026-28780: fix mod_proxy_ajp ajp_msg_check_header buffer over-read
• CVE-2026-29169: fix mod_dav_lock NULL pointer dereference
• CVE-2026-33006: fix mod_auth_digest timing attack
• CVE-2026-33007: fix mod_authn_socache NULL pointer dereference
• CVE-2026-33523: fix HTTP response splitting via status line
• CVE-2026-33857: fix off-by-one OOB reads in AJP getter functions
• CVE-2026-34032: fix ajp_msg_get_string buffer over-read
• CVE-2026-34059: fix ajp_parse_data heap over-read

• CVE-2026-24072: fix mod_rewrite ap_expr privilege escalation in htaccess
• CVE-2026-28780: fix mod_proxy_ajp ajp_msg_check_header buffer over-read
• CVE-2026-29169: fix mod_dav_lock NULL pointer dereference
• CVE-2026-33006: fix mod_auth_digest timing attack
• CVE-2026-33007: fix mod_authn_socache NULL pointer dereference
• CVE-2026-33523: fix HTTP response splitting via status line
• CVE-2026-33857: fix off-by-one OOB reads in AJP getter functions
• CVE-2026-34032: fix ajp_msg_get_string buffer over-read
• CVE-2026-34059: fix ajp_parse_data heap over-read

• CVE-2026-24072: mod_rewrite/mod_setenvif: use AP_EXPR_FLAG_RESTRICTED in htaccess to prevent reading server-side files via ap_expr from .htaccess
• CVE-2026-29169: mod_dav_lock: NULL pointer dereference in dav_generic_refresh_locks (use dp_scan instead of dp)
• CVE-2026-33006: mod_auth_digest: timing attack — use constant-time compare for nonce/digest verification
• CVE-2026-33007: mod_authn_socache: NULL pointer dereference when r->uri has no '/' in directory context
• CVE-2026-33523: scan outgoing status line for newlines and control characters to prevent HTTP response splitting
• CVE-2026-33857: mod_proxy_ajp: off-by-one OOB reads in ajp_msg_get/peek length checks
• CVE-2026-34032: mod_proxy_ajp: improper null termination and OOB read in ajp_msg_get_string
• CVE-2026-34059: mod_proxy_ajp: heap over-read in ajp_parse_data when message is too small

• CVE-2026-24072: mod_rewrite/mod_setenvif: use AP_EXPR_FLAG_RESTRICTED in htaccess to prevent reading server-side files via ap_expr from .htaccess
• CVE-2026-29169: mod_dav_lock: NULL pointer dereference in dav_generic_refresh_locks (use dp_scan instead of dp)
• CVE-2026-33006: mod_auth_digest: timing attack — use constant-time compare for nonce/digest verification
• CVE-2026-33007: mod_authn_socache: NULL pointer dereference when r->uri has no '/' in directory context
• CVE-2026-33523: scan outgoing status line for newlines and control characters to prevent HTTP response splitting
• CVE-2026-33857: mod_proxy_ajp: off-by-one OOB reads in ajp_msg_get/peek length checks
• CVE-2026-34032: mod_proxy_ajp: improper null termination and OOB read in ajp_msg_get_string
• CVE-2026-34059: mod_proxy_ajp: heap over-read in ajp_parse_data when message is too small

• CVE-2026-33857: fix length checks in AJP msg_get functions
• CVE-2026-34032: fix ajp_msg_get_string buffer checks
• CVE-2026-34059: fix ajp_parse_data message len check
• CVE-2026-24072: use AP_EXPR_FLAG_RESTRICTED in htaccess
• CVE-2026-29169: mod_dav_lock: use the right dav_lock_discovery
• CVE-2026-33006: mod_auth_digest: use apr_crypto_equals
• CVE-2026-33007: mod_authn_socache: validate URL earlier
• CVE-2026-33523: scan outgoing status line for newlines and controls
• CVE-2026-28780: fix ajp_msg_check_header check

• CVE-2026-24072: use AP_EXPR_FLAG_RESTRICTED in htaccess
• CVE-2026-29169: mod_dav_lock: use the right dav_lock_discovery
• CVE-2026-33006: mod_auth_digest: use apr_crypto_equals
• CVE-2026-33007: mod_authn_socache: validate URL earlier
• CVE-2026-33523: scan outgoing status line for newlines and controls
• CVE-2026-33857: fix length checks in AJP msg_get functions
• CVE-2026-34032: fix ajp_msg_get_string buffer checks
• CVE-2026-34059: fix ajp_parse_data message len check

• CVE-2026-24072: fix mod_rewrite ap_expr privilege escalation in htaccess
• CVE-2026-28780: fix mod_proxy_ajp ajp_msg_check_header buffer over-read
• CVE-2026-29169: fix mod_dav_lock NULL pointer dereference
• CVE-2026-33006: fix mod_auth_digest timing attack
• CVE-2026-33007: fix mod_authn_socache NULL pointer dereference
• CVE-2026-33523: fix HTTP response splitting via status line
• CVE-2026-33857: fix off-by-one OOB reads in AJP getter functions
• CVE-2026-34032: fix ajp_msg_get_string buffer over-read
• CVE-2026-34059: fix ajp_parse_data heap over-read

• CVE-2026-24072: mod_rewrite/mod_setenvif: use AP_EXPR_FLAG_RESTRICTED in htaccess to prevent reading server-side files via ap_expr from .htaccess
• CVE-2026-29169: mod_dav_lock: NULL pointer dereference in dav_generic_refresh_locks (use dp_scan instead of dp)
• CVE-2026-33006: mod_auth_digest: timing attack — use constant-time compare for nonce/digest verification
• CVE-2026-33007: mod_authn_socache: NULL pointer dereference when r->uri has no '/' in directory context
• CVE-2026-33523: scan outgoing status line for newlines and control characters to prevent HTTP response splitting
• CVE-2026-33857: mod_proxy_ajp: off-by-one OOB reads in ajp_msg_get/peek length checks
• CVE-2026-34032: mod_proxy_ajp: improper null termination and OOB read in ajp_msg_get_string
• CVE-2026-34059: mod_proxy_ajp: heap over-read in ajp_parse_data when message is too small

• SECURITY UPDATE: fix off-by-one out-of-bounds read in mod_proxy_ajp message getter functions
  • debian/patches/CVE-2026-33857-prereq.patch: prerequisite fix for ajp_msg_check_header bounds check to keep msg->len within buffer
  • debian/patches/CVE-2026-33857.patch: fix off-by-one out-of-bounds read in mod_proxy_ajp message getter functions
  • CVE-2026-33857
• SECURITY UPDATE: fix improper null termination and out-of-bounds read in ajp_msg_get_string
  • debian/patches/CVE-2026-34032.patch: fix improper null termination and out-of-bounds read in ajp_msg_get_string
  • CVE-2026-34032
• SECURITY UPDATE: fix heap buffer over-read in mod_proxy_ajp ajp_parse_data
  • debian/patches/CVE-2026-34059.patch: fix heap buffer over-read in mod_proxy_ajp ajp_parse_data
  • CVE-2026-34059
• SECURITY UPDATE: use restricted ap_expr parser in htaccess context to prevent local privilege escalation
  • debian/patches/CVE-2026-24072.patch: use restricted ap_expr parser in htaccess context to prevent local privilege escalation
  • CVE-2026-24072
• SECURITY UPDATE: fix NULL pointer dereference crash in mod_dav_lock dav_generic_refresh_locks
  • debian/patches/CVE-2026-29169.patch: fix NULL pointer dereference crash in mod_dav_lock dav_generic_refresh_locks
  • CVE-2026-29169
• SECURITY UPDATE: fix timing attack allowing Digest authentication bypass in mod_auth_digest
  • debian/patches/CVE-2026-33006.patch: fix timing attack allowing Digest authentication bypass in mod_auth_digest
  • CVE-2026-33006
• SECURITY UPDATE: fix NULL pointer dereference crash in mod_authn_socache
  • debian/patches/CVE-2026-33007.patch: fix NULL pointer dereference crash in mod_authn_socache
  • CVE-2026-33007
• SECURITY UPDATE: fix HTTP response splitting via newlines/controls in outgoing status line
  • debian/patches/CVE-2026-33523.patch: fix HTTP response splitting via newlines/controls in outgoing status line
  • CVE-2026-33523

• SECURITY UPDATE: NULL pointer dereference in mod_dav_lock indirect-lock refresh
  • debian/patches/CVE-2026-29169.patch: replace all six dp-> reads in the indirect-lock branch of dav_generic_refresh_locks() with the resolved dp_scan->... values in modules/dav/lock/locks.c so a crafted WebDAV LOCK refresh against a resource that only inherits an indirect lock from a parent no longer dereferences NULL via dp->locktoken / dp->f.scope / dp->owner. Upstream fix 225dc070adba11040b774cf641e1d8bc79941643 (SVN r1933354).
  • CVE-2026-29169

• SECURITY UPDATE: NULL pointer dereference in mod_dav_lock indirect-lock refresh
  • debian/patches/CVE-2026-29169.patch: replace all six dp-> reads in the indirect-lock branch of dav_generic_refresh_locks() with the resolved dp_scan->... values in modules/dav/lock/locks.c so a crafted WebDAV LOCK refresh against a resource that only inherits an indirect lock from a parent no longer dereferences NULL via dp->locktoken / dp->f.scope / dp->owner. Upstream fix 225dc070adba11040b774cf641e1d8bc79941643 (SVN r1933354).
  • CVE-2026-29169

• SECURITY UPDATE: NULL pointer dereference in mod_dav_lock indirect-lock refresh
  • debian/patches/CVE-2026-29169.patch: replace all six dp-> reads in the indirect-lock branch of dav_generic_refresh_locks() with the resolved dp_scan->... values in modules/dav/lock/locks.c so a crafted WebDAV LOCK refresh against a resource that only inherits an indirect lock from a parent no longer dereferences NULL via dp->locktoken / dp->f.scope / dp->owner. Upstream fix 225dc070adba11040b774cf641e1d8bc79941643 (SVN r1933354).
  • CVE-2026-29169

http2: double free and possible RCE on early reset. (CVE-2026-23918) mod_rewrite elevation of privileges via ap_expr. (CVE-2026-24072) buffer overflow in mod_proxy_ajp via ajp_msg_check_header(). (CVE-2026-28780) mod_md unrestricted OCSP response. (CVE-2026-29168) mod_dav_lock indirect lock crash. (CVE-2026-29169) mod_auth_digest timing attack. (CVE-2026-33006) mod_authn_socache crash. (CVE-2026-33007) HTTP response splitting forwarding malicious status line. (CVE-2026-33523) Off-by-one OOB reads in AJP getter functions. (CVE-2026-33857) Heap Buffer Over-Read Due to Missing Null-Termination Check (ajp_msg_get_string). (CVE-2026-34032) Heap Over-Read and memory disclosure in ajp_parse_data(). (CVE-2026-34059)

These are all security issues fixed in the apache2-2.4.67-1.1 package on the GA media of openSUSE Tumbleweed.

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

This update for apache2 fixes the following issues

Update to 2.4.66 (jsc#PED-16334):

Security issues:

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).

Non security issue:

• Internal server error on very long URL (bsc#690734).

This update for apache2 fixes the following issues

• CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
• CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
• CVE-2026-28780: heap buffer overflow in mod_proxy_ajp via ajp_msg_check_header() (bsc#1264163).
• CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976).
• CVE-2026-29168: allocation of resources without limits in mod_md via OCSP response (bsc#1264150).
• CVE-2026-29169: NULL pointer dereference in mod_dav_lock allows server crash via malicious requests (bsc#1263956).
• CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977).
• CVE-2026-33006: mod_auth_digest timing attack allows bypass of Digest authentication (bsc#1263955).
• CVE-2026-33007: NULL pointer dereference in mod_authn_socache allows unauthenticated remote user to crash a child processes (bsc#1263954).
• CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
• CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
• CVE-2026-34032: heap buffer overread in mod_proxy_ajp due to missing null-termination check (bsc#1263951).
• CVE-2026-34059: heap buffer overread and memory disclosure via ajp_parse_data() (bsc#1263950).
• CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978).
• CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955).
• CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956).
• CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962).
• CVE-2026-43951: out-of-bound read in merge_response_headers can cause crash (bsc#1267963).
• CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965).
• CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP send_request (bsc#1267969).
• CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a denial of service (bsc#1267970).
• CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971).
• CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-free (bsc#1267972).
• CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503).

Non security issue:

• Update to 2.4.66 (jsc#PED-16334).