Skip to content
OpenAdvisories
High · 7.5 CVE-2026-59685 EUVD-2026-90899GHSA-r58c-q4p8-g3xf

Apache HTTP Server: Out-of-Bounds Write in ap_directory_walk() Canonical-Name Rewrite on CASE_BLIND_FILESYSTEM

Published Oct 1, 2026 · Updated Oct 1, 2026 · Assigned by apache

Description

Out-of-bounds Write vulnerability in Apache HTTP Server on Windows while processing paths with 8.3 names that may grow when expanded.

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache HTTP Server 2.4.0 – ≤ 2.4.68 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 12 apache2 2.4.71-1~deb12u1 —
ReleasePackageFixed inAdvisory
Alpine v3.24 apache2 2.4.69-r0 —
Alpine v3.23 apache2 2.4.69-r0 —
Alpine v3.22 apache2 2.4.69-r0 —
Alpine v3.21 apache2 2.4.69-r0 —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 httpd 2.4.69-1 —

Advisories 1

References