CVE-2026-107589

Authentication Bypass by Spoofing in Jacamar CI

Published Oct 8, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Insufficient job validation for service accounts in Jacamar CI prior to v0.30.0 allows authenticated CI users to generate arbitrary account names.

Remediation

Vendor Solution

This issue presents a serious risk to all versions of Jacamar CI prior to v0.30.0 when used with GitLab Server v13.11 or later, or with v13.10 when the `allow_projects_to_create_service_accounts` feature flag enabled. If you are unable to immediately upgrade to the latest release, you can mitigate the risk by restricting the allowed accounts or groups in the configuration, or by using the RunAs validation script to check for bot accounts. Please see the release notes for a complete example.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Jacamar Ci
Jacamar Ci jacamar Ci
Vendors & Products Jacamar Ci
Jacamar Ci jacamar Ci
Type Values Removed Values Added
Description Insufficient job validation for service accounts in Jacamar CI prior to v0.30.0 allows authenticated CI users to generate arbitrary account names.
Title Authentication Bypass by Spoofing in Jacamar CI
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Oct 8, 2026, 7:14 PM
Reserved
Oct 8, 2026, 11:33 AM
Status
Deferred
Published
Oct 8, 2026, 3:17 PM
Modified
Oct 8, 2026, 9:02 PM