{"id":"CVE-2025-24856","aliases":["EUVD-2025-0169","GHSA-hj78-p4h7-m5fv"],"status":"published","title":"TYPO3-EXT-SA-2025-001: Account Takeover in extension \"OpenID Connect Authentication\" (oidc)","description":"An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00182,"percentile":0.07817,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-288","CWE-348","CWE-639"],"published":"2025-01-28T19:15:44Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"Packagist","package":"causal/oidc","fixed_in":["4.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"causal/oidc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"4.0.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"causal/oidc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"4.0.0"}]}],"versions":["v3.0.0"]}],"products":[{"vendor":"typo3","product":"oidc"},{"vendor":"xwiki-contrib","product":"oidc"}],"references":[{"url":"https://typo3.org/security/advisory/typo3-ext-sa-2025-001","tags":["advisory","web"]},{"url":"https://github.com/xperseguers/t3ext-oidc/commit/877e09f6faf4c87bbb41233112ec7e30d3c902b3","tags":["fix","web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/causal/oidc/CVE-2025-24856.yaml","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24856","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hj78-p4h7-m5fv"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24856.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-24856","description":"An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,","status":"published","published":"2025-03-16T00:00:00Z","modified":"2025-03-17T15:44:18.669Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-348"],"updated_at":"2026-11-02T14:32:44.11109Z"}],"euvd":[{"id":"EUVD-2025-0169","description":"An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,","status":"published","published":"2025-03-16T00:00:00Z","modified":"2025-03-17T15:44:18Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T20:53:01.76583Z"}],"ghsa":[{"id":"GHSA-hj78-p4h7-m5fv","title":"TYPO3-EXT-SA-2025-001: Account Takeover in extension \"OpenID Connect Authentication\" (oidc)","description":"## Problem Description\nA vulnerability in the account linking logic of the extension allows a pre-hijacking attack leading to Account Takeover. The attack can only be exploited if the following requirements are met:\n\n- An attacker can anticipate the email address of the user.\n- An attacker can register a public frontend user account using that email address before the user's first OIDC login.\n- The IDP returns the field email containing the email address of the user\n\n## Solution\nAn updated versions 4.0.0 is available from the TYPO3 extension manager, packagist and at \nhttps://extensions.typo3.org/extension/download/oidc/4.0.0/zip\n\nUsers of the extension are advised to update the extension as soon as possible.","status":"published","published":"2025-01-28T19:15:44Z","modified":"2025-03-17T20:23:44Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-288","CWE-348","CWE-639"],"updated_at":"2026-11-02T14:38:35.74197Z"}],"nvd":[{"id":"CVE-2025-24856","description":"An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,","status":"published","published":"2025-03-16T04:15:14.517Z","modified":"2026-06-17T08:59:44.617Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-348"],"updated_at":"2026-11-02T14:10:54.744127Z"}],"osv":[{"id":"CVE-2025-24856","description":"An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,","status":"published","published":"2025-03-16T00:00:00Z","modified":"2026-10-28T02:30:59.010032928Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium"}],"cwes":["CWE-348"],"updated_at":"2026-11-02T15:44:47.386092Z"},{"id":"GHSA-hj78-p4h7-m5fv","title":"TYPO3-EXT-SA-2025-001: Account Takeover in extension \"OpenID Connect Authentication\" (oidc)","description":"## Problem Description\nA vulnerability in the account linking logic of the extension allows a pre-hijacking attack leading to Account Takeover. The attack can only be exploited if the following requirements are met:\n\n- An attacker can anticipate the email address of the user.\n- An attacker can register a public frontend user account using that email address before the user's first OIDC login.\n- The IDP returns the field email containing the email address of the user\n\n## Solution\nAn updated versions 4.0.0 is available from the TYPO3 extension manager, packagist and at \nhttps://extensions.typo3.org/extension/download/oidc/4.0.0/zip\n\nUsers of the extension are advised to update the extension as soon as possible.","status":"published","published":"2025-01-28T19:15:44Z","modified":"2025-03-17T20:45:32.222405Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-288","CWE-348","CWE-639"],"updated_at":"2026-11-02T15:46:49.28217Z"}]}}