# CVE-2026-78252

## Summary

- **CVE ID:** CVE-2026-78252
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L)
- **CWE:** CWE-79
- **Published:** Sep 16, 2026
- **Last Modified:** Sep 16, 2026

## Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer.

## Affected Products

- GitLab — GitLab (15.3)
- GitLab — GitLab (19.2)
- GitLab — GitLab (19.3)

## References

- [CNA](https://gitlab.com/gitlab-org/gitlab/-/work_items/621447)
- [CNA](https://hackerone.com/reports/3917471)
- [CNA](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 33.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._