CVE-2026-13707

Session fixation attacks on improperly configured OAuth 1.0a tools

Published Jul 1, 2026 CVSS 4.0 · 0 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia oathauth
Vendors & Products Wikimedia
Wikimedia oathauth
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Session fixation attacks on improperly configured OAuth 1.0a tools
Weaknesses CWE-384
References
Metrics cvssV4_0

{'score': 0, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Jul 1, 2026, 3:46 PM
Reserved
Jun 29, 2026, 1:21 PM
Status
Analyzed
Published
Jul 1, 2026, 4:16 PM
Modified
Oct 25, 2026, 5:10 PM