What is CVE-2026-22710?

CVE-2026-22710 is a medium-severity vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-09.

How severe is CVE-2026-22710?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in The Wikimedia Foundation Mediawiki - Wikibase Extension

CVE-2026-22710

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (6.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

The Wikimedia Foundation Mediawiki - Wikibase Extension — versions 1.45, 1.44, 1.43
Wikimedia Wikibase — versions 1.39, 1.43, 1.44

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

c4f26cc8-17ff-4c99-b5e2-38fc1793eacc (Exploit, Issue Tracking)
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc (Patch)

Frequently asked questions

What is CVE-2026-22710?: CVE-2026-22710 is a medium-severity vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-09.
How severe is CVE-2026-22710?: Medium severity. CVSS v3 base score is 5.4 out of 10.