What’s Vulnerable › Vulnerabilities

CVE-2015-8009

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-07-25 · updated 2026-06-17
• Weakness: CWE-255

Description

The MWOAuthDataStore::lookup_token function in Extension:OAuth for MediaWiki 1.25.x before 1.25.3, 1.24.x before 1.24.4, and before 1.23.11 does not properly validate the signature when checking the authorization signature, which allows remote registered Consumers to use another Consumer's credentials by leveraging knowledge of the credentials.

Affected products

• Wikimedia Foundation MediaWiki: through 1.23.10; 1.24.0, 1.24.1, 1.24.2, 1.24.3, 1.25.0, 1.25.1 (+1)

References

• http://www.openwall.com/lists/oss-security/2015/10/29/14
• http://www.securitytracker.com/id/1034028
• https://phabricator.wikimedia.org/T103023
• http://www.openwall.com/lists/oss-security/2015/10/29/14
• http://www.securitytracker.com/id/1034028
• https://phabricator.wikimedia.org/T103023

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