CVE-2021-39887 — Cross-site Scripting in Gitlab

CWE-79 — Cross-site Scripting5 documents5 sources
Severity
5.4MEDIUMNVD
EPSS
0.2%
top 57.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GitlabDebian GitlabGitlab CE
Timeline
PublishedOct 5
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NExploitability: 2.3 | Impact: 2.7

Affected Packages5 packages

▶NVDgitlab/gitlab8.4.0 — 14.1.7+2
▶debiandebian/gitlab< gitlab 15.10.8+ds1-2 (sid)
▶CVEListV5gitlab/gitlab>=14.2, <14.2.5, >=14.3, <14.3.1, >=8.4, <14.1.7+2
▶gitlabgitlab/gitlab

🔴Vulnerability Details

2
GHSA
GHSA-8j2x-wq4x-63v8: A stored Cross-Site Scripting vulnerability in the GitLab Flavored Markdown in GitLab CE/EE version 8↗2022-05-24
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OSV
CVE-2021-39887: A stored Cross-Site Scripting vulnerability in the GitLab Flavored Markdown in GitLab CE/EE version 8↗2021-10-05
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📋Vendor Advisories

2
GitLab
CVE-2021-39887: 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 arbit↗2021-10-05
▶
Debian
CVE-2021-39887: gitlab - A stored Cross-Site Scripting vulnerability in the GitLab Flavored Markdown in G...↗2021
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