PT-2021-18735 · Wikimedia+1 · Wikimedia Parsoid+1

Arlolra · Published 2021-04-09 · Updated 2022-05-24 · CVE-2021-30458

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Wikimedia Parsoid versions prior to 0.11.1 Wikimedia Parsoid versions 0.12.x prior to 0.12.2

Description An issue allows an attacker to send crafted wikitext that will be transformed by Utils/WTUtils.php using a tag, bypassing sanitization steps, and potentially allowing for XSS.

Recommendations For versions prior to 0.11.1, update to version 0.11.1 or later. For versions 0.12.x prior to 0.12.2, update to version 0.12.2 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-1712

ALT-PU-2021-2091

CVE-2021-30458

GHSA-5PQX-77VF-85RW

Affected Products

Alt Linux

Wikimedia Parsoid

References · 13

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/wikimedia/parsoid/CVE-2021-30458.yaml · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-30458 · Security Note
• https://security.gentoo.org/glsa/202107-40 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30458 · Vendor Advisory
• https://phabricator.wikimedia.org/T279451 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30458 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30458 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30458 · Vendor Advisory
• https://mediawiki.org/wiki/Parsoid · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-30458 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30458 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-5pqx-77vf-85rw · Vendor Advisory
• https://github.com/wikimedia/mediawiki-services-parsoid · Note