Heap-based Buffer Overflow Affecting mod_ssl package, versions <1:2.4.62-13.0.1.el9_8.5


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.21% (68th percentile)

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  • Snyk IDSNYK-ORACLE9-MODSSL-18023751
  • published20 Jul 2026
  • disclosed8 Jun 2026

Introduced: 8 Jun 2026

CVE-2026-34356  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Oracle:9 mod_ssl to version 1:2.4.62-13.0.1.el9_8.5 or higher.
This issue was patched in ELSA-2026-41906.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_ssl package and not the mod_ssl package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1