CVE-2025-48989

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.

Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)

• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)

• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)

• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)

• tomcat: Apache Tomcat denial of service (CVE-2025-52520)

• tomcat: Apache Tomcat denial of service (CVE-2025-52434)

• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)

• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)

• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)

• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)

• tomcat: Apache Tomcat denial of service (CVE-2025-52520)

• tomcat: Apache Tomcat denial of service (CVE-2025-52434)

• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)

• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)

• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)

• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)

• tomcat: Apache Tomcat denial of service (CVE-2025-52520)

• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)

• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)

• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)

• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)

• tomcat: Apache Tomcat denial of service (CVE-2025-52520)

• tomcat: Apache Tomcat denial of service (CVE-2025-52434)

• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Root has patched CVE-2025-48989 in the org.apache.tomcat.embed:tomcat-embed-core package for Root:Maven. Multiple fixed versions available.

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)
• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)
• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)
• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)
• tomcat: Apache Tomcat denial of service (CVE-2025-52520)
• tomcat: Apache Tomcat denial of service (CVE-2025-52434)
• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)
• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)
• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)
• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)
• tomcat: Apache Tomcat denial of service (CVE-2025-52520)
• tomcat: Apache Tomcat denial of service (CVE-2025-52434)
• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988)
• tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125)
• apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976)
• tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989)
• tomcat: Apache Tomcat denial of service (CVE-2025-52520)
• tomcat: Apache Tomcat denial of service (CVE-2025-52434)
• tomcat: Apache Tomcat denial of service (CVE-2025-53506)

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.

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.

This issue affects Apache Tomcat: from 11.0.0 through 11.0.9, from 10.1.0 through 10.1.43 and from 9.0.0 through 9.0.107. Older, EOL versions may also be affected.

Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

• CVE-2025-48989: fix improper resource shutdown vulnerability to prevent reset attack

TuxCare rebuilt 6 packages to address 18 CVEs. Fixed in 9.0.83-tuxcare.1.

TuxCare rebuilt 2 packages to address 1 CVE. Fixed in 8.5.100-tuxcare.3.

TuxCare rebuilt 4 packages to address 15 CVEs. Fixed in 9.0.87-tuxcare.1.

TuxCare rebuilt 4 packages to address 12 CVEs. Fixed in 9.0.100-tuxcare.1.

TuxCare rebuilt 6 packages to address 22 CVEs. Fixed in 10.1.18-tuxcare.1.

TuxCare rebuilt 3 packages to address 4 CVEs. Fixed in 9.0.90-tuxcare.2.

TuxCare rebuilt 2 packages to address 1 CVE. Fixed in 9.0.75-tuxcare.3.

TuxCare rebuilt 5 packages to address 23 CVEs. Fixed in 9.0.46-tuxcare.1.

TuxCare rebuilt 4 packages to address 6 CVEs. Fixed in 10.1.42-tuxcare.1.

• SECURITY UPDATE: HTTP/2 header limit errors deferred until whole header block read
  • debian/patches/CVE-2024-24549.patch: validate headers after each HEADERS/CONTINUATION payload instead of only at end of block in java/org/apache/coyote/http2/Http2Parser.java, and swap the header emitter to the sink once validation fails in java/org/apache/coyote/http2/{Stream,Http2UpgradeHandler}.java
  • CVE-2024-24549
• SECURITY UPDATE: HTTP/2 active stream miscount leading to infinite connection timeout
  • debian/patches/CVE-2024-34750.patch: count each stream out of the active set exactly once in java/org/apache/coyote/http2/{Http2UpgradeHandler,Http2AsyncUpgradeHandler,Stream}.java
  • CVE-2024-34750
• SECURITY UPDATE: RCE via TOCTOU race in write-enabled default servlet on case insensitive file systems
  • debian/patches/CVE-2024-50379.patch: add path-keyed read/write locking via the new java/org/apache/catalina/WebResourceLockSet.java and use it in java/org/apache/catalina/webresources/{DirResourceSet,FileResource}.java
  • CVE-2024-50379
• SECURITY UPDATE: incomplete mitigation for CVE-2024-50379 on Java 8 and Java 11
  • debian/patches/CVE-2024-56337.patch: set -Dsun.io.useCanonCaches=false before any file system access in bin/catalina.sh
  • CVE-2024-56337
• SECURITY UPDATE: authentication bypass when a Jakarta Authentication component throws
  • debian/patches/CVE-2024-52316.patch: set a 500 status when validateRequest() throws AuthException in java/org/apache/catalina/authenticator/AuthenticatorBase.java
  • CVE-2024-52316
• SECURITY UPDATE: HTTP/2 denial of service via client triggered server side stream resets
  • debian/patches/CVE-2025-48989.patch: charge server initiated resets to the overhead counter in java/org/apache/coyote/http2/{Http2UpgradeHandler,Http2AsyncUpgradeHandler}.java
  • CVE-2025-48989
• SECURITY UPDATE: directory traversal via Rewrite Valve normalizing before decoding
  • debian/patches/CVE-2025-55752.patch: decode the rewritten URL before normalizing it in java/org/apache/catalina/valves/rewrite/RewriteValve.java
  • CVE-2025-55752
• SECURITY UPDATE: EncryptInterceptor padding oracle from the CBC default
  • debian/patches/CVE-2026-29146.patch: reject cipher modes that provide no protection and warn on the weaker ones in java/org/apache/catalina/tribes/group/interceptors/EncryptInterceptor.java; AES/GCM/PKCS5Padding, AES/CBC/NoPadding, AES/CFB/NoPadding and AES/OFB/NoPadding are now refused at startup
  • CVE-2026-29146

TuxCare rebuilt 2 packages to address 1 CVE. Fixed in 9.0.50-tuxcare.14.

• SECURITY UPDATE: fix for the following CVEs:
  • CVE-2025-48989: MadeYouReset HTTP/2 DoS — charge the connection overhead budget for server-initiated RST_STREAM frames in both Http2UpgradeHandler and Http2AsyncUpgradeHandler, and apply the initial HTTP/2 MAX_CONCURRENT_STREAMS and INITIAL_WINDOW_SIZE limits immediately (force-set) rather than only after the client ACKs the SETTINGS frame, closing the "malformed control frame -> server RST" amplification loop.
  • CVE-2025-55752: RewriteValve query-string-append (QSA) path traversal — swap the normalize/decode order in RewriteValve.invoke() so the rewritten URL is URL-decoded before normalisation, preventing encoded traversal sequences such as %2F..%2F from surviving normalize() and later reaching /WEB-INF/ or /META-INF/.
  • CVE-2026-29146: EncryptInterceptor padding oracle — validate the configured cluster encryptionAlgorithm against an allow-list. GCM is now only accepted with NoPadding; NONE, ECB, PCBC, CTS, KW, KWP and CTR are refused outright, as are CBC, CFB and OFB with NoPadding and CFB/OFB at a non-default block size (CFB8, OFB64, ...); an unusable algorithm raises IllegalArgumentException at startup instead of failing later. CBC, CFB and OFB with PKCS5Padding continue to work but log a warning recommending AES/GCM/NoPadding. The default encryptionAlgorithm also changes from AES/CBC/PKCS5Padding to the authenticated AES/GCM/NoPadding, which is what actually removes the padding oracle for the deployments that never set the attribute explicitly. Rollout note: AES/GCM/NoPadding is not wire-compatible with AES/CBC/PKCS5Padding, so nodes on the old and new defaults cannot exchange cluster messages. The preferred procedure is to stop the whole cluster and restart it on the new package. If a rolling restart is unavoidable, first set encryptionAlgorithm="AES/CBC/PKCS5Padding" explicitly on every node, roll the package out, then remove that setting everywhere and restart once more. This pin is a rollout-window measure only and must not be left in place: for as long as it is set the cluster remains exposed to the padding oracle, and the fix is complete only once it has been removed.

• SECURITY UPDATE: Denial of service in HTTP/2 - a stream could be removed from the count of active streams more than once, driving the count below the real value, so an infinite connection timeout was applied and connections that should have been closed stayed open
  • debian/patches/CVE-2024-34750.patch: guard each stream with an AtomicBoolean so that it is removed from the active stream count at most once, and route the decrements through the new decrementActiveRemoteStreamCount(Stream) helper
  • CVE-2024-34750
• SECURITY UPDATE: Remote code execution via the write enabled default servlet - on a case insensitive file system a race between a read and a concurrent write for the same path allowed an uploaded file to be picked up and compiled as a JSP
  • debian/patches/CVE-2024-50379.patch: add the WebResourceLockSet interface and serialise reads and writes for the same resource path in DirResourceSet and FileResource through a per-path read/write lock
  • CVE-2024-50379
• SECURITY UPDATE: Authentication bypass when a custom Jakarta Authentication component throws an exception without setting an HTTP status, leaving the response status at 200
  • debian/patches/CVE-2024-52316.patch: explicitly set a 500 status in authenticateJaspic() when validateRequest() throws an AuthException
  • CVE-2024-52316
• SECURITY UPDATE: Remote code execution via the write enabled default servlet - the mitigation for CVE-2024-50379 was incomplete because the JVM global canonical file name cache could still return a stale result for the concurrently written path
  • debian/patches/CVE-2024-56337.patch: disable the canonical file name cache before a potentially exposed WebResourceSet starts and refuse to start it if that cannot be confirmed, add Jre12Compat and Jre21Compat for the per Java version cache behaviour, and pass -Dsun.io.useCanonCaches=false from catalina.sh
  • CVE-2024-56337
• SECURITY UPDATE: Denial of service in HTTP/2 (MadeYouReset) - frames that make the server reset a stream were not counted against the connection overhead budget, so the CVE-2023-44487 mitigation never triggered
  • debian/patches/CVE-2025-48989.patch: count every RST_STREAM frame Tomcat sends using overheadResetFactor
  • CVE-2025-48989
• SECURITY UPDATE: Directory traversal via the RewriteValve, with possible remote code execution if PUT is enabled - the rewritten URL was normalized while still percent encoded, so an encoded ../ survived normalization and was decoded afterwards, letting the request escape into /WEB-INF/ or /META-INF/
  • debian/patches/CVE-2025-55752.patch: decode the rewritten URL before normalizing it, and reject the request with a 400 when normalization reports that the path escapes root
  • CVE-2025-55752
• SECURITY UPDATE: Padding oracle in the cluster EncryptInterceptor - the interceptor accepted cipher mode and padding combinations that offer no protection, and the CBC modes it accepted are malleable and open to a padding oracle
  • debian/patches/CVE-2026-29146.patch: reject the cipher mode and padding combinations that offer no protection, warn for the CBC, CFB and OFB modes with PKCS5Padding that are kept for compatibility, and recognise GCM/NoPadding as the recommended transformation. The patch also carries the upstream partial revert 776e12b3, without which the fix would reintroduce CVE-2026-34486 by passing messages that failed to decrypt up the interceptor chain with their raw bytes. Note that, as upstream, explicit EncryptInterceptor configurations using a mode that offers no protection (NONE, ECB, PCBC, CTS, KW, KWP, CTR, and CBC, CFB or OFB with NoPadding) are now rejected at startup. The default …

TuxCare rebuilt 8 packages to address 32 CVEs. Fixed in 9.0.24-tuxcare.1.

TuxCare rebuilt 6 packages to address 17 CVEs. Fixed in 10.1.33-tuxcare.1.

TuxCare rebuilt 5 packages to address 9 CVEs. Fixed in 9.0.13-tuxcare.1.

TuxCare rebuilt 5 packages to address 6 CVEs. Fixed in 9.0.39-tuxcare.1.

TuxCare rebuilt 5 packages to address 15 CVEs. Fixed in 10.1.16-tuxcare.1.

APR/Native Connector crash leading to DoS. (CVE-2025-52434) DoS via integer overflow in multipart file upload. (CVE-2025-52520) DoS via excessive h2 streams at connection start. (CVE-2025-53506) H2 DoS - Made You Reset. (CVE-2025-48989)