GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted requests with malformed authentication data.
Conclusion & alert: CVE-2025-13927 is rated Moderate Risk (49.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.85%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.85% | +0.80% |
| 2 | 2026-06-03 | 0.06% | 0.05% | -0.01% |
| 3 | 2026-05-24 | — | 0.06% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-13927 not yet assigned priority: Debian including 1 source packages (gitlab), 1 status rows across 1 suites (sid): open 1. | https://security-tracker.debian.org/tracker/CVE-2025-13927 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gitlab | gitlab | >= 11.9.0, < 18.6.4 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* |
| gitlab | gitlab | >= 11.9.0, < 18.6.4 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* |
| gitlab | gitlab | >= 18.7.0, < 18.7.2 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* |
| gitlab | gitlab | >= 18.7.0, < 18.7.2 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* |
| gitlab | gitlab | >= 18.8.0, < 18.8.2 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* |
| gitlab | gitlab | >= 18.8.0, < 18.8.2 | cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* |
| URL | Tags |
|---|---|
| https://about.gitlab.com/releases/2026/01/21/patch-release-gitlab-18-8-2-released/ | Release Notes Vendor Advisory |
| https://gitlab.com/gitlab-org/gitlab/-/issues/582737 | Broken Link |
| https://hackerone.com/reports/3439683 | Permissions Required |