CVE-2021-30458 — MEDIUM (6.1)

Vulnerability Description

An issue was discovered in Wikimedia Parsoid before 0.11.1 and 0.12.x before 0.12.2. An attacker can send crafted wikitext that Utils/WTUtils.php will transform by using a <meta> tag, bypassing sanitization steps, and potentially allowing for XSS.

CVSS Score

6.1

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Wikimedia	Parsoid	< 0.11.1

Related Weaknesses (CWE)

CWE-79

References

https://phabricator.wikimedia.org/T279451Issue TrackingVendor Advisory
https://security.gentoo.org/glsa/202107-40Third Party Advisory
https://www.mediawiki.org/wiki/ParsoidVendor Advisory
https://phabricator.wikimedia.org/T279451Issue TrackingVendor Advisory
https://security.gentoo.org/glsa/202107-40Third Party Advisory
https://www.mediawiki.org/wiki/ParsoidVendor Advisory

FAQ

What is CVE-2021-30458?

CVE-2021-30458 is a vulnerability with a CVSS score of 6.1 (MEDIUM). An issue was discovered in Wikimedia Parsoid before 0.11.1 and 0.12.x before 0.12.2. An attacker can send crafted wikitext that Utils/WTUtils.php will transform by using a <meta> tag, bypassing saniti...

How severe is CVE-2021-30458?

CVE-2021-30458 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-30458?

Check the references section above for vendor advisories and patch information. Affected products include: Wikimedia Parsoid.