CVE-2026-16493

Aliases:UBUNTU-CVE-2026-16493DEBIAN-CVE-2026-16493
Advisory lineage Upstream: 0 Downstream: 6
Awaiting Analysis
Published: 21 Jul 2026, 17:26
Last modified:04 Sept 2026, 02:01

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.17% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 Jul 2026, 17:26
Published
Vulnerability first disclosed
04 Sept 2026, 02:01
Last Modified
Vulnerability information updated

Description

A flaw was found in ansible-core. The _extract_collection_from_git() function in ansible-core's concrete_artifact_manager.py constructs git clone commands without a '--' (end-of-options) separator before user-supplied URLs when installing collections from git sources. An attacker who provides a crafted collection source URI containing git argument injection payloads can achieve arbitrary command execution when a user runs 'ansible-galaxy collection install' with the malicious source. This is an incomplete fix for CVE-2026-11332, which hardened the role install path but missed the equivalent collection install code path.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.17%• Percentile: 7%

Techniques & Countermeasures

  • CWE-88•Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

    The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.

Affected Systems

  • debian•ansible

    all | < 5.4.0-1 | < 5.4.0-1 | < 5.4.0-1

  • debian•ansible-core

    all | all | all

  • ubuntu•ansible

    all | all | all

  • ubuntu•ansible-core

    all | all | all

References (8)