CVE-2026-15146

GNU Wget is a free software package for retrieving files using HTTP, HTTPS, FTP and FTPS the most widely-used Internet protocols. It is a non-interactive commandline tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc.

Security Fix(es):

GNU Wget does not validate the IP address provided by an FTP PASV response while operating in FTP passive mode. A malicious FTP server, or an HTTP server that redirects to an FTP URL, can exploit this behavior to redirect Wget’s data connection to an arbitrary IP address and port. This allows an attacker to forge server-side requests (SSRF) from the machine running Wget, potentially accessing localhost services or internal network resources.(CVE-2026-15146)

GNU Wget through 1.25.0, fixed in commit 37a40fc, contains a heap buffer underread vulnerability in the clean_metalink_string() function within src/metalink.c that allows a malicious server to trigger memory corruption by serving a Metalink document containing a whitespace-only URL. Attackers can cause the function to decrement a pointer past the start of the buffer when processing an all-whitespace Metalink URL, potentially leading to abnormal program behavior.(CVE-2026-58469)

GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attackers can supply malicious Content-Range header values to trigger undefined behavior and download desynchronization in the affected client.(CVE-2026-58470)

GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.(CVE-2026-58471)

GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_quote_string() function in src/convert.c that allows a remote attacker to trigger memory corruption by supplying a crafted HTML attribute with a large number of characters requiring entity encoding. A server-supplied HTML attribute causes a signed integer counter to overflow during output size accumulation, resulting in an undersized heap allocation and subsequent heap buffer overflow during the copy phase.(CVE-2026-58472)

GNU Wget versions < 1.25.0+4f85853f64 do not validate the IP address provided by an FTP PASV response while operating in FTP passive mode. A malicious FTP server, or an HTTP server that redirects to an FTP URL, can exploit this behavior to redirect Wget’s data connection to an arbitrary IP address and port. This allows an attacker to forge server-side requests (SSRF) from the machine running Wget, potentially accessing localhost services or internal network resources.

• SECURITY UPDATE: SSRF via unvalidated FTP PASV/LPSV response address
  • debian/patches/CVE-2026-15146.patch: validate the PASV/LPSV response address against the control connection peer in src/ftp-basic.c
  • CVE-2026-15146

• SECURITY UPDATE: SSRF via unvalidated FTP PASV/LPSV response address
  • debian/patches/CVE-2026-15146.patch: validate the PASV/LPSV response address against the control connection peer in src/ftp-basic.c
  • CVE-2026-15146

• CVE-2026-15146: validate the address advertised in the FTP PASV/LPSV response against the control connection peer, preventing a malicious FTP server from steering the data connection to an arbitrary host (SSRF)

• SECURITY UPDATE: SSRF via unvalidated FTP PASV/LPSV response address
  • debian/patches/CVE-2026-15146.patch: validate the PASV/LPSV response address against the control connection peer in src/ftp-basic.c
  • CVE-2026-15146

• CVE-2026-15146: validate the address advertised in an FTP PASV/LPSV response against the control connection's peer, so a malicious FTP server cannot redirect the data connection to an arbitrary host (SSRF)

Updated wget packages fix security vulnerabilities: -CVE-2026-58469 Wget incorrectly handled Metalink documents containing a whitespace-only URL. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Mageia 9 and Mageia 10. -CVE-2026-58470 : Wget incorrectly handled Content-Range header values, leading to an integer overflow. A remote attacker could possibly use this issue to cause download desynchronization. -CVE-2026-58471 : Wget incorrectly handled character set conversion of server-supplied filenames. A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. This issue affected Mageia9 and Mageia 10. -CVE-2026-58472: It was discovered that Wget incorrectly handled HTML attributes requiring entity encoding. A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. -CVE-2026-15146: GNU Wget did not validate the IP address provided by an FTP PASV response while operating in FTP passive mode. A malicious FTP server, or an HTTP server that redirects to an FTP URL, could exploit this behavior to redirect Wget's data connection to an arbitrary IP address and port. This allowed an attacker to forge server-side requests (SSRF) from the machine running Wget, potentially accessing localhost services or internal network resources.

These are all security issues fixed in the wget-1.25.0-4.1 package on the GA media of openSUSE Tumbleweed.

This update for wget fixes the following issues:

Security issued fixed:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).

Other updates and bugfixes:

• Fix segmentation fault in metalink4 (bsc#1273449).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).
  • See: commit 7b1cdecc49bc77bde220fc575c8a00386c3f3bcf from https://gitlab.com/gnuwget/wget.

Root has patched CVE-2026-15146 in the wget package for Root:Debian:11. Multiple fixed versions available.

Root has patched CVE-2026-15146 in the wget package for Root:Debian:13. Multiple fixed versions available.

This update for wget fixes the following issues:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).

This update for wget fixes the following issues

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).

This update for wget fixes the following issues:

Security issued fixed:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).

Other updates and bugfixes:

• Fix segmentation fault in metalink4 (bsc#1273449).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).
  • See: commit 7b1cdecc49bc77bde220fc575c8a00386c3f3bcf from https://gitlab.com/gnuwget/wget.

This update for wget fixes the following issues:

Security issued fixed:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).

Other updates and bugfixes:

• Fix segmentation fault in metalink4 (bsc#1273449).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).
  • See: commit 7b1cdecc49bc77bde220fc575c8a00386c3f3bcf from https://gitlab.com/gnuwget/wget.

This update for wget fixes the following issues:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters can lead to a heap buffer overflow (bsc#1271036).

This update for wget fixes the following issues

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).

This update for wget fixes the following issues:

• CVE-2026-15146: unvalidated IP address in an FTP PASV response can lead to server-side request forgery (bsc#1271320).
• CVE-2026-58469: Metalink document containing a whitespace-only URL can cause a heap buffer underread (bsc#1271033).
• CVE-2026-58470: server-controlled Content-Range header values can cause an integer overflow in parse_content_range() (bsc#1271034).
• CVE-2026-58471: server-supplied filenames requiring character set conversion could lead to heap memory corruption (bsc#1271035).
• CVE-2026-58472: crafted HTML attribute with a large number of characters requiring entity encoding can lead to a heap buffer overflow (bsc#1271036).
• Fix metalink regression from CVE-2026-58469 fix (bsc#1272219).

It was discovered that Wget did not properly validate the IP address provided in an FTP PASV response when operating in FTP passive mode. A remote attacker controlling a malicious FTP server, or an HTTP server that redirects to an FTP URL, could possibly use this issue to redirect Wget's data connection to an arbitrary address and perform server-side request forgery, potentially accessing localhost services or internal network resources.