CVE-2026-103754

medium

Description

A flaw was found in ansible-runner. The unstream_dir() function, which receives and extracts a streamed zip archive on the worker side of the ansible-runner transmit/worker protocol, re-creates symbolic links from archive content without validating the link target and applies chmod() and utime() to an unsanitized filesystem path derived from the archive member name. A crafted archive processed by a worker that consumes attacker-influenced input can create files, create symbolic links, or change permissions outside the intended target directory, which can be leveraged toward code execution.

References

https://github.com/ansible/ansible-runner/pull/1550

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-90788

https://bugzilla.redhat.com/show_bug.cgi?id=2544510

https://access.redhat.com/security/cve/CVE-2026-103754

Details

Source: Mitre, NVD

Published: 2026-10-01

Updated: 2026-10-01

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:N/I:C/A:P

Severity: Medium

CVSS v3

Base Score: 5.9

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

Severity: Medium

EPSS

EPSS: 0.00335