CVE-2026-13707

High

Description

Session fixation vulnerability in Wikimedia Foundation OAuth. This vulnerability is associated with program files src/Backend/MWOAuthServer.Php. This issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.

SeverityHigh

CVSS7.6

Exploit probability—

Product

Mediawiki

PublishedJul 1, 2026

First seenJul 1, 2026

Weakness typeCWE-384CWE-384

How to fix

Update

mediawiki mediawiki1.43.9, 1.44.6, 1.45.4 or later

Affected products

Product	Affected versions	Fixed in
mediawiki mediawiki	1.43.0 ≤ v < 1.43.9, 1.44.0 ≤ v < 1.44.6, 1.45.0 ≤ v < 1.45.4, 1.46.0	1.43.9, 1.44.6, 1.45.4

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