{"id":"CVE-2026-13707","aliases":["EUVD-2026-41033","GHSA-qjj7-573r-4398"],"status":"published","title":"Session fixation attacks on improperly configured OAuth 1.0a tools","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","severity":{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","level":"none","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00344,"percentile":0.28177,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-384"],"published":"2026-07-01T14:32:26Z","modified":"2026-10-27T02:30:31Z","products":[{"vendor":"cordea","product":"oauth"},{"vendor":"mediawiki","product":"mediawiki"},{"vendor":"wikimedia foundation","product":"oauth"}],"references":[{"url":"https://phabricator.wikimedia.org/T428324","tags":["Permissions Required","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13707"},{"url":"https://github.com/advisories/GHSA-qjj7-573r-4398"}],"sources":{"cve":[{"id":"CVE-2026-13707","title":"Session fixation attacks on improperly configured OAuth 1.0a tools","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","status":"published","published":"2026-07-01T14:32:26.598Z","modified":"2026-07-01T15:46:18.205Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","level":"none","assessor":"cna"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:19:49.885652Z"}],"euvd":[{"id":"EUVD-2026-41033","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","status":"published","published":"2026-07-01T14:32:26Z","modified":"2026-07-01T15:46:18Z","updated_at":"2026-11-02T18:20:19.446061Z"}],"ghsa":[{"id":"GHSA-qjj7-573r-4398","title":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated...","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","status":"published","published":"2026-07-01T18:31:47Z","modified":"2026-07-13T15:32:40Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/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":"none"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T15:09:25.900925Z"}],"nvd":[{"id":"CVE-2026-13707","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","status":"published","published":"2026-07-01T16:16:31.743Z","modified":"2026-10-25T17:10:00.197Z","cvss":[{"version":"4.0","score":0,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/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":"none","assessor":"secondary"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","level":"high","assessor":"primary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:12:27.199837Z"}],"osv":[{"id":"CVE-2026-13707","description":"Session fixation vulnerability in Wikimedia Foundation OAuth.\n\n This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.\n\n\n\nThis issue affects OAuth: from * through 1.46.0, 1.45.4, 1.44.6, 1.43.9.","status":"published","published":"2026-07-01T16:16:31.743Z","modified":"2026-10-27T02:30:31.572323974Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:57.354194Z"}]}}