# CVE-2025-12029: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

> CVE-2025-12029: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab. CVSS 8.0 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-12029
Last updated: 2026-10-14T21:10:00Z

- Published: 2025-12-11 07:32 UTC · Updated: 2026-10-14 21:10 UTC · Assigner: GitLab
- CVSS: 8.0 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
- EPSS: 0.53%, 44th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-79

## Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have, under certain circumstances, allowed an unauthenticated user to perform unauthorized actions on behalf of another user by injecting malicious external scripts into the Swagger UI."

## Affected vendors and products

- GitLab: GitLab

## Tracked companies

- [GitLab](https://rewindex.com/company/gitlab.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-12029)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-12029)
- [https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/](https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/)
- [https://gitlab.com/gitlab-org/gitlab/-/issues/577975](https://gitlab.com/gitlab-org/gitlab/-/issues/577975)
- [https://hackerone.com/reports/3317485](https://hackerone.com/reports/3317485)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-12029 · Markdown: https://rewindex.com/cve/CVE-2025-12029.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-12029 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:05:42.095Z