What’s Vulnerable › Vulnerabilities
CVE-2026-13707: Session fixation attacks on improperly configured OAuth 1.0a tools
- Severity: high (CVSS 7.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-01 · updated 2026-10-25
- Weakness: CWE-384
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.
Affected products
- Wikimedia Foundation MediaWiki: from 1.43.0 before 1.43.9; from 1.44.0 before 1.44.6; from 1.45.0 before 1.45.4; 1.46.0-rc0 — fixed in 1.43.9, 1.44.6, 1.45.4
How to fix
Upgrade to a fixed version: Wikimedia Foundation MediaWiki 1.43.9, 1.44.6, 1.45.4. Check the vendor advisory for mitigations.
References
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