PT-2021-19421 · Mediawiki+1 · Mediawiki+2

Rhinosf1 · Published 2021-04-22 · Updated 2024-03-06 · CVE-2021-31550

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions MediaWiki versions through 1.35.2 CommentBox extension for MediaWiki versions through 1.35.2

Description An issue was discovered that allows a malicious actor to introduce XSS payloads into various layers via crafted configuration variables.

Recommendations For MediaWiki versions through 1.35.2, update to a version that contains a fix for this issue. For CommentBox extension for MediaWiki versions through 1.35.2, update to a version that contains a fix for this issue.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-1991

ALT-PU-2021-2091

BIT-MEDIAWIKI-2021-31550

CVE-2021-31550

Affected Products

Alt Linux

Commentbox Extension

Mediawiki

References · 5

• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Commentbox/+/651934 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31550 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31550 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-31550 · Vendor Advisory
• https://phabricator.wikimedia.org/T270767 · Note