{"id":"GHSA-q9cp-mc96-m4w2","aliases":["BIT-typo3-2020-26229","CVE-2020-26229"],"title":"XML External Entity in Dashboard Widget","description":"### Problem\nIt has been discovered that RSS widgets are susceptible to XML external entity processing.\nThis vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions.\n\nAt least with _libxml2_ version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed.\n\n### Solution\nUpdate to TYPO3 version 10.4.10 that fixes the problem described.","severity":"low","score":3.7,"published":"2020-11-23T21:18:44.000Z","modified":"2026-07-08T06:27:23.991Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"typo3/cms-core","ranges":[{"events":[{"introduced":"10.0.0"},{"fixed":"10.4.10"}],"type":"ECOSYSTEM"}],"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","v10.4.2","v10.4.3","v10.4.4","v10.4.5","v10.4.6","v10.4.7","v10.4.8","v10.4.9"],"fixed":["10.4.10"]},{"ecosystem":"Packagist","name":"typo3/cms","ranges":[{"events":[{"introduced":"10.0.0"},{"fixed":"10.4.10"}],"type":"ECOSYSTEM"}],"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","v10.4.2","v10.4.3","v10.4.4","v10.4.5","v10.4.6","v10.4.7","v10.4.8","v10.4.9"],"fixed":["10.4.10"]}],"references":["https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-q9cp-mc96-m4w2","https://nvd.nist.gov/vuln/detail/CVE-2020-26229","https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-26229.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-26229.yaml","https://typo3.org/security/advisory/typo3-core-sa-2020-012"],"sources":[{"name":"OSV","id":"GHSA-q9cp-mc96-m4w2","modified":"2026-07-08T06:27:23.991857684Z","url":"https://osv.dev/vulnerability/GHSA-q9cp-mc96-m4w2"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L","score":3.7}]}