{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15305","assignerOrgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","state":"PUBLISHED","assignerShortName":"TYPO3","dateReserved":"2026-07-09T16:25:43.306Z","datePublished":"2026-07-14T12:45:10.996Z","dateUpdated":"2026-07-14T13:26:21.743Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","shortName":"TYPO3","dateUpdated":"2026-07-14T12:45:10.996Z"},"title":"TYPO3 CMS - Unrestricted File Upload in Form Framework","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-351","description":"CWE-351 Insufficient Type Distinction","type":"CWE"}]}],"affected":[{"vendor":"TYPO3","product":"TYPO3 CMS","collectionURL":"https://packagist.org","packageName":"typo3/cms-form","repo":"https://github.com/TYPO3/typo3","modules":["Form Framework"],"versions":[{"status":"affected","version":"14.2.0","lessThan":"14.3.5","versionType":"semver"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionStartIncluding":"14.2.0","versionEndExcluding":"14.3.5","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"descriptions":[{"lang":"en","value":"Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.5.","supportingMedia":[{"type":"text/html","base64":false,"value":"Users were able to upload files with arbitrary MIME types to forms using <code>FileUpload</code> or <code>ImageUpload</code> elements with <code>allowedMimeTypes</code> configured. The restriction was not enforced server-side because the <code>MimeTypeValidator</code> was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.5."}]}],"references":[{"url":"https://typo3.org/security/advisory/typo3-core-sa-2026-020","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}}],"credits":[{"lang":"en","value":"Josua Vogel","type":"remediation developer"},{"lang":"en","value":"Oliver Hader","type":"remediation developer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-14T13:26:13.647808Z","id":"CVE-2026-15305","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":"2026-07-14T13:26:21.743Z"}}]}}