All errata/p11/ALT-PU-2026-21588-2
ALT-PU-2026-21588-2

Package update ansible-core in branch p11

Version2.21.6-alt1
Published2026-11-13
Max severityHIGH
Severity:

Closed issues (2)

CVE-2026-89091
HIGH8.8

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.

Published: 2026-10-08Modified: 2026-11-04
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H