CVE-2026-63686

HighCVSS 7.5/10Last modified Oct 5, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

No affected versions have been published.

Timeline

Published
Oct 1, 2026
Last modified
Oct 5, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-636879.1Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding securitCVE-2026-6368810.0Dell Container Storage Modules (CSM), versions prior to v1.18.0, contains a Missing Authentication for Critical Function vulnerability in thCVE-2026-636896.5Dell Container Storage Modules, versions prior to 1.18.0, contain(s) an Insertion of Sensitive Information into Log File vulnerability. A loCVE-2026-63695.5An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user toCVE-2026-636907.4Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authentication for Critical Function vulnerability in the csiCVE-2026-636919.6Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authorization vulnerability in the Dell CSI Driver for PowerMCVE-2026-6369210.0Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authentication for Critical Function vulnerability. An unauthCVE-2026-636936.6Dell Client BIOS contains an Improper Link Resolution Before File Access ('Link Following') vulnerability. A low privileged attacker with loCVE-2026-636945.0Dell SmartFabric OS10 Software, versions prior to 10.5.6.14, contains an Improper Neutralization of Special Elements used in a Command ('ComCVE-2026-636959.8Dell SmartFabric OS10 Software, versions prior to 10.6.1.3, contains a Session Fixation vulnerability. An unauthenticated attacker with remoCVE-2026-636969.1Dell SmartFabric OS10 Software, versions prior to 10.6.1.3, contains a Download of Code Without Integrity Check vulnerability. A high privilCVE-2026-636977.2Dell System Update, versions prior to 2.3.0.0, contains an Improper Certificate Validation vulnerability. A high privileged attacker with re
CVE-2026-63686: High severity, CVSS 7.5 | Vulnix