CVE-2026-103754
Ansible-runner: ansible-runner: path traversal and symlink escape in unstream_dir() allows file write outside the target directory
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
5.9
Ansible-runner: ansible-runner: path traversal and symlink escape in unstream_dir() allows file write outside the target directory
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.
- Record
CVE-2026-103754- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2026-90788
5.9
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.
- Record
EUVD-2026-90788- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3h4x-374r-8hhc
5.9
A flaw was found in ansible-runner. The unstream_dir() function, which receives and extracts a...
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.
- Record
GHSA-3h4x-374r-8hhc- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
5.9
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.
- Record
CVE-2026-103754- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-103754
5.9
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.
- Record
DEBIAN-CVE-2026-103754- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-103754
5.9
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.
- Record
UBUNTU-CVE-2026-103754- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ansible-runnerDebian:12 |
All versions, plus listed versions 2.3.1-22.3.4-12.3.6-12.4.0-0.12.4.1-12.4.2+dfsg-12.4.3-12.4.3-2 |
None known |
ansible-runnerDebian:13 |
All versions, plus listed versions 2.4.1-12.4.2+dfsg-12.4.3-12.4.3-2 |
None known |
ansible-runnerDebian:14 |
All versions, plus listed versions 2.4.1-12.4.2+dfsg-12.4.3-12.4.3-2 |
None known |
ansible-runnerUbuntu:22.04:LTS |
All versions, plus listed versions 1.4.6-11.4.6-1.12.1.1-1 |
None known |
ansible-runnerUbuntu:24.04:LTS |
All versions, plus listed versions 2.3.1-22.3.4-12.3.4-1ubuntu12.3.6-1 |
None known |
ansible-runnerUbuntu:26.10 |
All versions, plus listed versions 2.4.1-12.4.3-12.4.3-2 |
None known |
ansible-runnerUbuntu:26.04:LTS |
All versions, plus listed versions 2.4.1-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-103754 is a medium vulnerability (CVSS 5.9) in Red Hat Ansible Automation Platform 2, published October 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. No source names a fixed version.
References
access.redhat.com/security/cve/CVE-2026-103754
bugzilla.redhat.com/show_bug.cgi?id=2544510
github.com/ansible/ansible-runner/pull/1550
nvd.nist.gov/vuln/detail/CVE-2026-103754
github.com/advisories/GHSA-3h4x-374r-8hhc
security-tracker.debian.org/tracker/CVE-2026-103754
ubuntu.com/security/CVE-2026-103754
cve.org/CVERecord?id=CVE-2026-103754