Authentication Bypass by Spoofing in Jacamar CI
Summary
| CVE | CVE-2026-107589 |
|---|---|
| State | PUBLISHED |
| Assigner | GitLab |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-08 15:17:45 UTC |
| Updated | 2026-10-08 21:02:43 UTC |
| Description | Insufficient job validation for service accounts in Jacamar CI prior to v0.30.0 allows authenticated CI users to generate arbitrary account names. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
EPSS: 0.001110000 probability, percentile 0.012380000 (date 2026-10-10)
Problem Types: CWE-290 | CWE-290 CWE-290: Authentication Bypass by Spoofing
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L |
CVSS v3.1 Breakdown
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Jacamar CI | Jacamar CI | affected 0.30.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| ecp-ci.gitlab.io/docs/releasenotes/jacamar/jacamar_0.30.0.html | [email protected] | ecp-ci.gitlab.io | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: 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.