CVE-2026-78252
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.2
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L
- EPSS probability
- 0.39%
- CWE
- CWE-79
- Published
- 2026-09-16
- Last modified
- 2026-09-16
Affected products
- GitLab GitLab
- GitLab GitLab
- GitLab GitLab
Weakness type
Related vulnerabilities
- CVE-2026-90943 — parallax filament-comments through 3.0.0 Stored XSS via Comment Body
- CVE-2026-90561 — Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG
- CVE-2026-89256 — AVideo Bookmark Plugin Stored XSS via Chapter Names
- CVE-2026-89255 — AVideo LoginControl Stored XSS via PGP Public Key
- CVE-2026-89254 — AVideo CustomizeUser Stored XSS via field_name Parameter
- CVE-2026-89253 — AVideo Stored XSS via donationLink in watch page button
- CVE-2026-89249 — AVideo YPTWallet Stored XSS via CryptoWallet Configuration
- CVE-2026-15639 — Reflected Cross-Site Scripting