High [CVE-2026-12398] Galaxy_ng: shell injection in legacy role import via unsanitized git ref names
This high-severity Red Hat Linux advisory covers CVE-2026-12398 affecting Red Hat Ansible Automation Platform 2.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A command injection vulnerability was found in galaxy_ng. The do_git_checkout() function in the legacy role import API (v1) interpolates unsanitized git ref names (branch/tag names) into shell commands executed via subprocess.run() with shell=True.
An authenticated user who controls a git repository can create a branch or tag with shell metacharacters in the name to achieve remote code execution on the pulp worker. The vulnerable endpoint is only reachable when GALAXY_ENABLE_LEGACY_ROLES is set to True, which is not the default configuration.
Red Hat Ansible Automation Platform ships galaxy_ng with GALAXY_ENABLE_LEGACY_ROLES set to False by default in all supported versions (2.4, 2.5, 2.6). When this setting is False, the vulnerable v1 API endpoint is not registered and returns a 404 response, making the vulnerability unreachable.
Standard AAP deployments are not affected. Customers who have explicitly enabled legacy role support (GALAXY_ENABLE_LEGACY_ROLES=True) should apply the mitigation steps above until a fix is available.
Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-78.
Affected Red Hat products: Red Hat Ansible Automation Platform 2. Red Hat does not currently list a fixing RHSA for this CVE.
Is CVE-2026-12398 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-12398 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-12398?
The advisory VulniPulse tracks names no fixed release. Follow Red Hat's guidance for workarounds and updates.
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Mitigation checklist
- The following practices would help for avoiding exposure and mitigate this flaw: 1. Ensure that GALAXY_ENABLE_LEGACY_ROLES is set to False (the default) in your Galaxy/Hub configuration. This prevents the v1 API routes from being registered, making the vulnerable endpoint entirely unreachable. 2. If legacy role support must be enabled, restrict access to the Galaxy/Hub API to trusted users only. The vulnerability requires authentication, so limiting who can authenticate reduces exposure. 3. Monitor import activity for suspicious git references containing shell metacharacters in branch or tag names.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
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