CVE-2026-34059: Apache HTTP Server: mod_proxy_ajp: Heap Over-Read and memory disclosure in ajp_parse_data()

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-07

Last Updated

2026-05-15

EPSS Score

0.39% (percentile: 31.0%)

Affected Products (2)

Open Source Software

• cbl2 httpd 2.4.66-1 on CBL Mariner 2.0
• azl3 httpd 2.4.66-1 on Azure Linux 3.0

Revision History

• 2026-05-07: Information published.
• 2026-05-15: Information published.