CVE-2022-34911

Name: CVE-2022-34911
Creator: NVD / NIST
Published: 2022-07-02T20:15:08.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2022-34911 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An issue was discovered in MediaWiki before 1.35.7, 1.36.x and 1.37.x before 1.37.3, and 1.38.x before 1.38.1. XSS can occur in configurations that allow a JavaScript payload in a username. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

An issue was discovered in MediaWiki before 1.35.7, 1.36.x and 1.37.x before 1.37.3, and 1.38.x before 1.38.1. XSS can occur in configurations that allow a JavaScript payload in a username. After account creation, when it sets the page title to "Welcome" followed by the username, the username is not escaped: SpecialCreateAccount::successfulAction() calls ::showSuccessPage() with a message as second parameter, and OutputPage::setPageTitle() uses text().

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.86%

53.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.35.7
Mediawiki	Mediawiki	>= 1.36.0, < 1.37.3
Mediawiki	Mediawiki	1.38.0
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37

References

https://lists.debian.org/debian-lts-announce/2022/09/msg00027.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7N5ZBWLNNPZKFK7Q4KEHGCJ2YELQEUJP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DKKOQXPYLMBSEVDHFS32BPBR3ZQJKY5B/
https://phabricator.wikimedia.org/T308471Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/202305-24
https://www.debian.org/security/2022/dsa-5246Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00027.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7N5ZBWLNNPZKFK7Q4KEHGCJ2YELQEUJP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DKKOQXPYLMBSEVDHFS32BPBR3ZQJKY5B/
https://phabricator.wikimedia.org/T308471Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/202305-24
https://www.debian.org/security/2022/dsa-5246Third Party Advisory

Timeline

Published: Jul 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-34911?

How severe is CVE-2022-34911?

CVE-2022-34911 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2022-34911?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-34911?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST