CVE-2026-13706

HIGH

UrlShortener extension url validation can be bypassed due to difference between php url parsing and WHATWG

Title source: cna

Description

Improper input validation vulnerability in Wikimedia Foundation UrlShortener. This vulnerability is associated with program files includes/UrlShortenerUtils.Php.

References (1)

Core 1

Core References

https://phabricator.wikimedia.org/T418533

Scores

CVSS v3 8.8

EPSS 0.0033

EPSS Percentile 24.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-20

Status published

Products (3)

mediawiki/mediawiki 1.46.0 rc0

mediawiki/mediawiki 1.43.0 - 1.43.9

Wikimedia Foundation/UrlShortener < 1.46.0, 1.45.4, 1.44.6, 1.43.9

Published Jul 01, 2026

Tracked Since Jul 01, 2026