PT-2021-23487 · Mediawiki+1 · Mediawiki+1

Urbanecm_Wmf · Published 2021-10-06 · Updated 2024-03-06 · CVE-2021-42048

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki versions through 1.36.2

Description An issue was discovered in the Growth extension in MediaWiki. Any admin can add arbitrary JavaScript code to the Newcomer home page footer, which can be executed by viewers with zero edits.

Recommendations For MediaWiki versions through 1.36.2, update to a version that contains a fix for this issue to prevent arbitrary JavaScript code execution. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-3561

ALT-PU-2022-1199

BIT-MEDIAWIKI-2021-42048

CVE-2021-42048

Affected Products

Alt Linux

Mediawiki

References · 6

• https://osv.dev/vulnerability/BIT-mediawiki-2021-42048 · Vendor Advisory
• https://gerrit.wikimedia.org/r/q/Iaa90a8976834d70caad592e9d1b18510318db537 · Vendor Advisory
• https://phabricator.wikimedia.org/T289064 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42048 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42048 · Vendor Advisory
• https://t.me/cibsecurity/50647 · Telegram Post