{"id":"CVE-2026-58517","aliases":["EUVD-2026-41114","GHSA-9r5v-wvvq-6v9f"],"status":"published","title":"Blocked users can create and edit WikiLambda objects","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00329,"percentile":0.26399,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288"],"published":"2026-07-01T18:23:02Z","modified":"2026-10-27T02:31:11Z","products":[{"vendor":"mediawiki","product":"mediawiki"},{"vendor":"the wikimedia foundation","product":"mediawiki - wikilambda extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T428833","tags":["Issue Tracking","Vendor Advisory","report"]},{"url":"https://gerrit.wikimedia.org/r/c/1305376","tags":["Issue Tracking","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58517"},{"url":"https://github.com/advisories/GHSA-9r5v-wvvq-6v9f"}],"sources":{"cve":[{"id":"CVE-2026-58517","title":"Blocked users can create and edit WikiLambda objects","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","status":"published","published":"2026-07-01T18:23:02.161Z","modified":"2026-07-01T18:35:06.496Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T13:47:39.876248Z"}],"euvd":[{"id":"EUVD-2026-41114","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","status":"published","published":"2026-07-01T18:23:02Z","modified":"2026-07-01T18:35:06Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium"}],"updated_at":"2026-11-02T18:20:19.066641Z"}],"ghsa":[{"id":"GHSA-9r5v-wvvq-6v9f","title":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki ...","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","status":"published","published":"2026-07-01T21:36:20Z","modified":"2026-07-09T21:31:14Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:09:22.189239Z"}],"nvd":[{"id":"CVE-2026-58517","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","status":"published","published":"2026-07-01T19:16:57.063Z","modified":"2026-10-25T16:10:00.147Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:12:27.199837Z"}],"osv":[{"id":"CVE-2026-58517","description":"Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.\n\nThis issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.","status":"published","published":"2026-07-01T19:16:57.063Z","modified":"2026-10-27T02:31:11.373198972Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:12.496548Z"}]}}