What is GHSA-h4g4-79cj-82qx?

GHSA-h4g4-79cj-82qx is a security advisory published by GitHub Security Advisories with High severity. A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before...

Which CVE IDs does GHSA-h4g4-79cj-82qx cover?

GHSA-h4g4-79cj-82qx covers the following CVE IDs: CVE-2026-63686. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h4g4-79cj-82qx?

GHSA-h4g4-79cj-82qx has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-h4g4-79cj-82qxHighCVSS 7.5

A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before...

Vendor

GitHub Security Advisories

Published

October 1, 2026

Last Modified

October 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-63686 →

📋 Description

A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails.

Users are recommended to upgrade to version 2.4.69, which fixes this issue.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-63686
https://httpd.apache.org/security/vulnerabilities_24.html
http://www.openwall.com/lists/oss-security/2026/10/01/25
https://github.com/advisories/GHSA-h4g4-79cj-82qx