VULNERABILITY INTELLIGENCE

CVE-2011-1766

CVSS score5.8 MEDIUM
EPSS probability2.23%
CISA KEVNot currently listed
Published2011-05-23
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:N

Description

includes/User.php in MediaWiki before 1.16.5, when wgBlockDisablesLogin is enabled, does not clear certain cached data after verification of an auth token fails, which allows remote attackers to bypass authentication by creating crafted wikiUserID and wikiUserName cookies, or by leveraging an unattended workstation.

Weakness classification

  • CWE-287: Improper Authentication

Primary references