AlmaLinux alert ALSA-2026:21391 (httpd)

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[Announce]  [Security Advisory] ALSA-2026:21391: httpd security update (Important)
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Fri, 29 May 2026 14:01:51 +0000
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<0100019e740a9550-780eba83-cedb-469f-81b1-ce99350291bf-000000@email.amazonses.com>
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Article
Hi,

You are receiving an AlmaLinux Security update email because you subscribed to receive errata
notifications from AlmaLinux.

AlmaLinux: 9
Type: Security
Severity: Important
Release date: 2026-05-29

Summary:

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web
server.  

Security Fix(es):  

  * httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()
(CVE-2026-34059)
  * httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check
(CVE-2026-34032)
  * httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)
  * httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash
(CVE-2026-33007)
  * Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution
via heap-based buffer overflow (CVE-2026-28780)


For more details about the security issue(s), including the impact, a CVSS score, acknowledgments,
and other related information, refer to the CVE page(s) listed in the References section.


Full details, updated packages, references, and other related information:
https://errata.almalinux.org/9/ALSA-2026-21391.html

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AlmaLinux Team
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