Vulnerability · Published Oct 1, 2026 · Assigned by redhat
CVE-2026-103754Ansible-runner: ansible-runner: path traversal and symlink escape in unstream_dir() allows file write outside the target directory
Medium 5.9
In plain English
A medium-severity path traversal in Red Hat Ansible Automation Platform 2 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ansible-runner | no fix listed | DEBIAN-CVE-2026-103754 |
| Debian:13 | ansible-runner | no fix listed | DEBIAN-CVE-2026-103754 |
| Debian:14 | ansible-runner | no fix listed | DEBIAN-CVE-2026-103754 |
| Ubuntu:22.04:LTS | ansible-runner | no fix listed | UBUNTU-CVE-2026-103754 |
| Ubuntu:24.04:LTS | ansible-runner | no fix listed | UBUNTU-CVE-2026-103754 |
| Ubuntu:26.04:LTS | ansible-runner | no fix listed | UBUNTU-CVE-2026-103754 |
| Ubuntu:26.10 | ansible-runner | no fix listed | UBUNTU-CVE-2026-103754 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2 | see references |
| Red Hat | Red Hat Ansible Automation Platform 2 | see references |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
References
- https://access.redhat.com/security/cve/CVE-2026-103754 vdb-entry, x_refsource_REDHAT
- RHBZ#2544510 issue-tracking, x_refsource_REDHAT
- https://github.com/ansible/ansible-runner/pull/1550