{"id":"GHSA-2wj9-434x-9hvp","summary":"Insecure Deserialization in Backend User Settings in TYPO3 CMS","details":"It has been discovered that backend user settings (in $BE_USER-\u003euc) are vulnerable to insecure deserialization. In combination with vulnerabilities of 3rd party components this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability.\n\nUpdate to TYPO3 versions 9.5.17 or 10.4.2 that fix the problem described.\n\n### References\n* https://typo3.org/security/advisory/typo3-core-sa-2020-005","aliases":["BIT-typo3-2020-11067","CVE-2020-11067"],"modified":"2026-09-10T03:48:30.137957665Z","published":"2020-05-13T23:29:04Z","database_specific":{"github_reviewed_at":"2020-05-13T23:28:47Z","nvd_published_at":null,"cwe_ids":["CWE-502"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11067"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-11067.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-11067.yaml"},{"type":"WEB","url":"https://typo3.org/security/advisory/typo3-core-sa-2020-005"}],"affected":[{"package":{"name":"typo3/cms-core","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.5.17"}]}],"versions":["v9.0.0","v9.1.0","v9.2.0","v9.2.1","v9.3.0","v9.3.1","v9.3.2","v9.3.3","v9.4.0","v9.5.0","v9.5.1","v9.5.10","v9.5.11","v9.5.12","v9.5.13","v9.5.14","v9.5.15","v9.5.16","v9.5.2","v9.5.3","v9.5.4","v9.5.5","v9.5.6","v9.5.7","v9.5.8","v9.5.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-2wj9-434x-9hvp/GHSA-2wj9-434x-9hvp.json"}},{"package":{"name":"typo3/cms-core","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.2"}]}],"versions":["v10.0.0","v10.1.0","v10.2.0","v10.2.1","v10.2.2","v10.3.0","v10.4.0","v10.4.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-2wj9-434x-9hvp/GHSA-2wj9-434x-9hvp.json"}},{"package":{"name":"typo3/cms","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.2"}]}],"versions":["v10.0.0","v10.1.0","v10.2.0","v10.2.1","v10.2.2","v10.3.0","v10.4.0","v10.4.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-2wj9-434x-9hvp/GHSA-2wj9-434x-9hvp.json"}},{"package":{"name":"typo3/cms","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.5.17"}]}],"versions":["v9.0.0","v9.1.0","v9.2.0","v9.2.1","v9.3.0","v9.3.1","v9.3.2","v9.3.3","v9.4.0","v9.5.0","v9.5.1","v9.5.10","v9.5.11","v9.5.12","v9.5.13","v9.5.14","v9.5.15","v9.5.16","v9.5.2","v9.5.3","v9.5.4","v9.5.5","v9.5.6","v9.5.7","v9.5.8","v9.5.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-2wj9-434x-9hvp/GHSA-2wj9-434x-9hvp.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}