CVE-2026-34356

HighCVSS 7.5/10Last modified Jul 23, 2026

Description

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.

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-122

Affected software

VendorProductVersions
Apache Software FoundationApache HTTP Server>= 2.4.0, <= 2.4.67

References

Timeline

Published
Jun 8, 2026
Last modified
Jul 23, 2026
NVD status
Analyzed

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