{"id":"CVE-2026-103442","aliases":["EUVD-2026-90075","GHSA-7c6r-9xcw-h46m"],"status":"published","title":"MergeAccount PHP object injection via session-key substitution","description":"External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.\n\nThis issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.","severity":{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0028,"percentile":0.20683,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-15"],"published":"2026-09-30T16:09:40Z","modified":"2026-11-09T16:30:29Z","exploits":[{"source":"pocgithub","id":"BomboBombone/CVE-2026-103442","title":"BomboBombone/CVE-2026-103442","date":"2026-09-30","url":"https://github.com/BomboBombone/CVE-2026-103442"}],"products":[{"vendor":"the wikimedia foundation","product":"mediawiki centralauth extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T435624"},{"url":"https://gerrit.wikimedia.org/r/q/I9c59e5c3f217c1eaa02934a076604049bac2b025"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103442"},{"url":"https://github.com/advisories/GHSA-7c6r-9xcw-h46m"}],"sources":{"cve":[{"id":"CVE-2026-103442","title":"MergeAccount PHP object injection via session-key substitution","description":"External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.\n\nThis issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.","status":"published","published":"2026-09-30T16:09:40.369Z","modified":"2026-11-09T16:30:29.825Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"high","assessor":"cna"}],"cwes":["CWE-15"],"updated_at":"2026-11-09T17:34:05.130069Z"}],"euvd":[{"id":"EUVD-2026-90075","description":"External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.\n\nThis issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.","status":"published","published":"2026-09-30T16:09:40Z","modified":"2026-11-09T16:30:29Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"high"}],"updated_at":"2026-11-09T17:17:30.806151Z"}],"ghsa":[{"id":"GHSA-7c6r-9xcw-h46m","title":"External control of system or configuration setting vulnerability in The Wikimedia Foundation...","description":"External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.\n\nThis issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.","status":"published","published":"2026-09-30T18:33:34Z","modified":"2026-09-30T18:33:39Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/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:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"high"}],"cwes":["CWE-15"],"updated_at":"2026-11-02T15:12:37.551329Z"}],"nvd":[{"id":"CVE-2026-103442","description":"External control of system or configuration setting vulnerability in The Wikimedia Foundation MediaWiki CentralAuth extension allows Code Injection.\n\nThis issue affects MediaWiki CentralAuth extension: 1.46, 1.45, and 1.43.","status":"published","published":"2026-09-30T16:17:10.05Z","modified":"2026-11-09T17:17:06.653Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/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:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"high","assessor":"secondary"}],"cwes":["CWE-15"],"updated_at":"2026-11-09T20:15:31.965294Z"}]}}