{"id":"GHSA-657m-v5vm-f6rw","summary":"Cross-Site-Request-Forgery in Backend","details":"\u003e ### Meta\n\u003e * CVSS: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C` (8.2)\n\n### Problem\nIt has been discovered that the new TYPO3 v11 feature that allows users to create and share [deep links in the backend user interface](https://typo3.org/article/typo3-version-112-escape-the-orbit#c12178) is vulnerable to cross-site-request-forgery.\n\nThe impact is the same as described in [TYPO3-CORE-SA-2020-006 (CVE-2020-11069)](https://typo3.org/security/advisory/typo3-core-sa-2020-006). However, it is not limited to the same site context and does not require the attacker to be authenticated. In a worst case scenario, the attacker could create a new admin user account to compromise the system.\n\nTo successfully carry out an attack, an attacker must trick his victim to access a compromised system. The victim must have an active session in the TYPO3 backend at that time.\n\nThe following [Same-Site cookie settings](https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/8.7.x/Feature-90351-ConfigureTYPO3-shippedCookiesWithSameSiteFlag.html) in _$GLOBALS[TYPO3_CONF_VARS][BE][cookieSameSite]_ are required for an attack to be successful:\n\n* _SameSite=_***strict***: malicious evil.**example.org** invoking TYPO3 application at good.**example.org**\n* _SameSite=_***lax*** or ***none***: malicious **evil.com** invoking TYPO3 application at **example.org**\n\n### Solution\nUpdate your instance to TYPO3 version 11.5.0 which addresses the problem described.\n\n### Credits\nThanks to Richie Lee who reported this issue and to TYPO3 core & security team members Benni Mack and Oliver Hader who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2021-014](https://typo3.org/security/advisory/typo3-core-sa-2021-014)\n* [CVE-2020-11069](https://nvd.nist.gov/vuln/detail/CVE-2020-11069) reintroduced in TYPO3 v11.2.0","aliases":["BIT-typo3-2021-41113","CVE-2021-41113"],"modified":"2026-05-07T05:02:10.913876649Z","published":"2021-10-05T20:23:47Z","database_specific":{"nvd_published_at":"2021-10-05T18:15:00Z","cwe_ids":["CWE-309","CWE-352"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-10-05T18:48:07Z"},"references":[{"type":"WEB","url":"https://github.com/TYPO3/typo3/security/advisories/GHSA-657m-v5vm-f6rw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11069"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41113"},{"type":"WEB","url":"https://github.com/TYPO3/typo3/commit/fa51999203c5e5d913ecae5ea843ccb2b95fa33f"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-41113.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-41113.yaml"},{"type":"PACKAGE","url":"https://github.com/TYPO3/typo3"},{"type":"WEB","url":"https://typo3.org/security/advisory/typo3-core-sa-2020-006"},{"type":"WEB","url":"https://typo3.org/security/advisory/typo3-core-sa-2021-014"}],"affected":[{"package":{"name":"typo3/cms-core","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.2.0"},{"fixed":"11.5.0"}]}],"versions":["v11.2.0","v11.3.0","v11.3.1","v11.3.2","v11.3.3","v11.4.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/10/GHSA-657m-v5vm-f6rw/GHSA-657m-v5vm-f6rw.json"}},{"package":{"name":"typo3/cms","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.2.0"},{"fixed":"11.5.0"}]}],"versions":["v11.2.0","v11.3.0","v11.3.1","v11.3.2","v11.3.3","v11.4.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/10/GHSA-657m-v5vm-f6rw/GHSA-657m-v5vm-f6rw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}