CVE-2026-34356CWE-122

Apache HTTP Server: ProxyPassReverseCookieMap buffer overflow

High · published June 8, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
68.2
In the wild
Unconfirmed
What it is

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie*

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01210 · 68.2th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-06-08T15:12Z
EPSS history
Timeline
  • 08 JUN 15:12Z
    Apache HTTP Server: ProxyPassReverseCookieMap buffer overflow
    cvelistv5