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


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.63% (76th percentile)

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  • Snyk IDSNYK-ORACLE9-MODSSL-17495563
  • published25 Jun 2026
  • disclosed5 May 2026

Introduced: 5 May 2026

CVE-2026-28780  (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_8.1 or higher.
This issue was patched in ELSA-2026-21391.

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 mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.

CVSS Base Scores

version 3.1