VULNERABILITY INTELLIGENCE

CVE-2021-39887

CVSS score7.3 HIGH

EPSS probability0.86%

CISA KEVNot currently listed

Published2021-10-05

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Description

A stored Cross-Site Scripting vulnerability in the GitLab Flavored Markdown in GitLab CE/EE version 8.4 and above allowed an attacker to execute arbitrary JavaScript code on the victim's behalf.

Weakness classification

nvd@nist.gov: CWE-79

Primary references

cve@gitlab.com — Vendor Advisory
cve@gitlab.com — Broken Link
cve@gitlab.com — Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link
af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Third Party Advisory