CVE-2021-39887

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CVSS 3.1

5.4 medium

EPSS

<1%p56

Published

Oct 5, 2021 (Oct 5, 2021)

Modified

Jun 17, 2026

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.

Vendors: gitlab
Products: gitlab
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.9%)

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