{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107848","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-08T22:34:49.291Z","datePublished":"2026-10-09T20:22:12.778Z","dateUpdated":"2026-10-13T11:20:32.388Z"},"containers":{"cna":{"title":"Contao: Cross-site request forgery in custom backend actions","problemTypes":[{"descriptions":[{"cweId":"CWE-352","lang":"en","description":"CWE-352: Cross-Site Request Forgery (CSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/contao/contao/security/advisories/GHSA-9ff2-p842-45wq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/contao/contao/security/advisories/GHSA-9ff2-p842-45wq"},{"name":"https://github.com/contao/contao/commit/34dd27ee6739f10568d3d95d8784862255c925b4","tags":["x_refsource_MISC"],"url":"https://github.com/contao/contao/commit/34dd27ee6739f10568d3d95d8784862255c925b4"},{"name":"https://github.com/contao/contao/releases/tag/5.7.12","tags":["x_refsource_MISC"],"url":"https://github.com/contao/contao/releases/tag/5.7.12"}],"affected":[{"vendor":"contao","product":"contao","versions":[{"version":">= 4.0.0, < 5.3.50","status":"affected"},{"version":">= 5.4.0-RC1, < 5.7.12","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-09T20:22:12.778Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-9ff2-p842-45wq","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T11:20:04.775608Z","id":"CVE-2026-107848","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-13T11:20:32.388Z"}}]}}