PT-2026-47317

CVE-2026-34356

·

Published

2026-02-23

·

Updated

2026-10-07

Description by

CVSS 3.1
9.8
Critical
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Apache HTTP Server versions 2.4.0 through 2.4.67
Description A heap-based buffer overflow occurs when interacting with malicious backend servers using ProxyPassReverseCookie*. A heap-based buffer overflow is a memory corruption issue where data exceeds the allocated boundary of a buffer on the heap, potentially leading to crashes or arbitrary code execution.
Recommendations Upgrade to version 2.4.68.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Related identifiers
ALSA-2026:34109
ALSA-2026:41906
ALSA-2026:42828
AZL-89744
BIT-APACHE-2026-34356
CLSA-2026-1781194173
CLSA-2026-1781209763
CLSA-2026-1781210149
CLSA-2026-1781255857
CLSA-2026-1781261042
CLSA-2026-1781273712
CLSA-2026-1781628808
ECHO-4833-98FE-E642
OESA-2026-2744
OESA-2026-2745
OESA-2026-2746
OESA-2026-2747
OPENSUSE-SU-2026:21235-1
RHSA-2026:25042
RHSA-2026:34109
RHSA-2026:41906
RHSA-2026:42828
RHSA-2026:47046
SUSE-SU-2026:22564-1
SUSE-SU-2026:2686-1
SUSE-SU-2026:2717-1
SUSE-SU-2026:2735-1
SUSE-SU-2026:2759-1
USN-8516-1
USN-8571-1
Found an issue in the description? Have something to add? Feel free to write us 👾