{"id":"CVE-2026-107848","revision":"b31181cfc8c44c6fab6fd2be30a5d62f","records":[{"revision":"b31181cfc8c44c6fab6fd2be30a5d62f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107848","aliases":[],"title":"Contao: Cross-site request forgery in custom backend actions","description":"Contao is an Open Source CMS. From version 4.0.0 until 5.3.50 and 5.7.12, RequestTokenListener validates REQUEST_TOKEN only for POST requests, while the declarative GET guard runs only when an act parameter is present. Backend actions dispatched through the key parameter can therefore execute without a CSRF token when an authenticated backend user loads an attacker-controlled URL. Reachable actions remain limited to modules available to that user, and the advisory demonstrates destructive or state-changing actions rather than privilege escalation. This issue is fixed in versions 5.3.50 and 5.7.12.","state":0,"publishedAt":"2026-10-09T20:22:12.778+00:00","modifiedAt":"2026-10-13T11:20:32.388+00:00","affected":[{"ecosystem":"Vendor product","name":"contao","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"contao\",\n                    \"product\": \"contao\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 4.0.0, < 5.3.50\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 5.4.0-RC1, < 5.7.12\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","score":3.5,"severity":"LOW"}],"references":["https://github.com/contao/contao/security/advisories/GHSA-9ff2-p842-45wq","https://github.com/contao/contao/commit/34dd27ee6739f10568d3d95d8784862255c925b4","https://github.com/contao/contao/releases/tag/5.7.12"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107848","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107848","identifiers":["CVE-2026-107848"]},"retained":false,"historicalAffected":[]}],"coverage":[]}