What is CVE-2022-29905?

CVE-2022-29905 is a medium-severity vulnerability in MediaWiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2022-04-29.

How severe is CVE-2022-29905?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in MediaWiki

CVE-2022-29905

The FanBoxes extension for MediaWiki through 1.37.2 (before 027ffb0b9d6fe0d823810cf03f5b562a212162d4) allows Special:UserBoxes CSRF.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2022-04-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

MediaWiki

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

phabricator.wikimedia.org/T306741 (Exploit, Patch, Third Party Advisory)
gerrit.wikimedia.org/r/c/mediawiki/extensions/FanBoxes/+/786327 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-29905?: CVE-2022-29905 is a medium-severity vulnerability in MediaWiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2022-04-29.
How severe is CVE-2022-29905?: Medium severity. CVSS v3 base score is 4.3 out of 10.