{"id":"CVE-2011-4361","aliases":["DEBIAN-CVE-2011-4361","DSA-2366-1","EUVD-2011-4291","GHSA-5qr9-g785-2f9v"],"status":"published","title":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests,...","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02229,"percentile":0.82862,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-276"],"published":"2011-12-18T00:00:00Z","modified":"2026-10-23T17:47:27Z","fixes":[{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.15.5-4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.15.5-4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.15.5-4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-4"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-4"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-4"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-2squeeze2"}]}],"versions":["1:1.15.5-2","1:1.15.5-2squeeze1"],"bundled":6},{"source":"osv","ecosystem":"Debian:5.0","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.12.0-2lenny9"}]}],"versions":["1:1.12.0-2lenny2","1:1.12.0-2lenny3","1:1.12.0-2lenny3~bpo40+1","1:1.12.0-2lenny4","1:1.12.0-2lenny5","1:1.12.0-2lenny6","1:1.12.0-2lenny7","1:1.12.0-2lenny8"],"bundled":6}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-November/000104.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=758171","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","advisory","report"]},{"url":"http://openwall.com/lists/oss-security/2011/11/29/6","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"https://bugzilla.wikimedia.org/show_bug.cgi?id=32616","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Vendor Advisory","advisory","fix","report"]},{"url":"http://openwall.com/lists/oss-security/2011/11/29/12","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://www.debian.org/security/2011/dsa-2366","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4361"},{"url":"https://github.com/advisories/GHSA-5qr9-g785-2f9v"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-4361","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-4361","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2012-01-08T11:00:00Z","modified":"2024-08-07T00:09:18.393Z","updated_at":"2026-11-02T14:35:37.671707Z"}],"euvd":[{"id":"EUVD-2011-4291","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2012-01-08T11:00:00Z","modified":"2024-08-07T00:09:18Z","updated_at":"2026-11-03T01:39:48.961231Z"}],"ghsa":[{"id":"GHSA-5qr9-g785-2f9v","title":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests,...","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2022-05-13T01:10:43Z","modified":"2023-02-01T05:03:38Z","cwes":["CWE-276"],"updated_at":"2026-11-02T14:50:05.685198Z"}],"nvd":[{"id":"CVE-2011-4361","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2012-01-08T11:55:19.797Z","modified":"2026-06-16T23:34:50.613Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:02:11.800512Z"}],"osv":[{"id":"CVE-2011-4361","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2012-01-08T11:55:19Z","modified":"2026-04-10T03:42:06.168418Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-4361","description":"MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.","status":"published","published":"2012-01-08T11:55:19.797Z","modified":"2026-10-23T17:47:27.576855096Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"id":"DSA-2366-1","title":"mediawiki - multiple","status":"published","published":"2011-12-18T00:00:00Z","modified":"2026-03-09T01:18:37.854939Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}