# CVE-2026-12436

## Summary

- **CVE ID:** CVE-2026-12436
- **Severity:** HIGH
- **CVSS Score:** 8.4 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L)
- **CWE:** CWE-915
- **Published:** Jul 29, 2026
- **Last Modified:** Jul 31, 2026

## Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.

## Affected Products

- GitLab — GitLab (18.0)
- GitLab — GitLab (19.1)
- GitLab — GitLab (19.2)

## References

- [CNA](https://gitlab.com/gitlab-org/gitlab/-/work_items/603223)
- [CNA](https://hackerone.com/reports/3800511)
- [CNA](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.31%
- **EPSS Percentile:** 23.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._