CVE-2021-39887 | BDVDB-2026-162005 Detail

GitLabGitLab

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

No weakness recorded in the source data.

References#

Exploit#

No public exploit known

History#

Version 12021-10-05Record published in the CVE List.
Version 22024-08-04Most recent update recorded in the CVE List.

Published

Published: 2021-10-05
Last modified: 2024-08-04

Vendor information

Vendor: GitLab
Product: GitLab

All GitLab vulnerabilities

Score

7.3 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 58.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>=8.4, <14.1.7
Fixed
Not stated
Vulnerable
>=14.2, <14.2.5
Fixed
Not stated
Vulnerable
>=14.3, <14.3.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.3 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).