CVE-2026-58520

URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - UrlShortener Extension allows Cross-Site Flashing. This issue affects Mediawiki - UrlShortener Extension: from * before 1.43.9, 1.44.6, 1.45.4.

Score

CVSS 4.0 6.9 Medium

Status

Analyzed - c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Published

2026-07-01

Last modified

2026-10-25

Weaknesses

CWE-601

Affected products

• Mediawiki (Mediawiki)
• Mediawiki - Urlshortener Extension (The Wikimedia Foundation)

References

• https://phabricator.wikimedia.org/T418431
• https://gerrit.wikimedia.org/r/q/I7a59cc4c351b5aa47ed46f7a14a1105fd1ecc5b5