CVE-2026-58520

UrlShortener defaults to ineffective validation open to third-party redirects

Published Jul 1, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia mediawiki-urlshortener Extension
Vendors & Products Wikimedia
Wikimedia mediawiki-urlshortener Extension
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title UrlShortener defaults to ineffective validation open to third-party redirects
Weaknesses CWE-601
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Jul 1, 2026, 5:56 PM
Reserved
Jul 1, 2026, 3:40 AM
Status
Analyzed
Published
Jul 1, 2026, 6:16 PM
Modified
Oct 25, 2026, 4:10 PM