CVE-2026-58520

MEDIUM

UrlShortener defaults to ineffective validation open to third-party redirects

Title source: cna

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.

References (2)

Core 2

Core References

https://phabricator.wikimedia.org/T418431

https://gerrit.wikimedia.org/r/q/I7a59cc4c351b5aa47ed46f7a14a1105fd1ecc5b5

Scores

CVSS v4 6.9

EPSS 0.0026

EPSS Percentile 17.4%

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-601

Status published

Products (1)

The Wikimedia Foundation/Mediawiki - UrlShortener Extension < 1.43.9, 1.44.6, 1.45.4

Published Jul 01, 2026

Tracked Since Jul 01, 2026