CVE-2026-33857

Public on 2026-05-04

Modified on 2026-05-06

Description

Out-of-bounds Read vulnerability in mod_proxy_ajp of

Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

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

Severity

Medium

See what this means

CVSS v3 Base Score

5.3

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory	Status
Amazon Linux 2 - Core	httpd	2026-05-26	ALAS2-2026-3314	Fixed
Amazon Linux 2023	httpd	2026-05-26	ALAS2023-2026-1720	Fixed

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-33857 Mitre: CVE-2026-33857