{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47344","assignerOrgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","state":"PUBLISHED","assignerShortName":"TYPO3","dateReserved":"2026-05-19T12:49:25.966Z","datePublished":"2026-06-08T19:03:19.826Z","dateUpdated":"2026-06-08T19:50:47.479Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","shortName":"TYPO3","dateUpdated":"2026-06-08T19:03:19.826Z"},"title":"TYPO3 HTML Sanitizer allows Cross-Site Scripting","datePublic":"2026-06-08T20:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-436","description":"CWE-436 Interpretation Conflict","type":"CWE"}]}],"affected":[{"vendor":"TYPO3","product":"HTML Sanitizer","collectionURL":"https://packagist.org","packageName":"typo3/html-sanitizer","repo":"https://github.com/TYPO3/html-sanitizer","versions":[{"status":"affected","version":"0","lessThan":"2.3.2","versionType":"semver"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:typo3:html_sanitizer:*:*:*:*:*:*:*:*","versionEndExcluding":"2.3.2"}]}]}],"descriptions":[{"lang":"en","value":"When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., </style\\t>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.","supportingMedia":[{"type":"text/html","base64":false,"value":"When <code>ALLOW_INSECURE_RAW_TEXT</code> is enabled, whitespace-variant closing tags (e.g., <code>&lt;/style\\t&gt;</code>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of <code>typo3/html-sanitizer</code> before version 2.3.2."}]}],"references":[{"url":"https://typo3.org/security/advisory/typo3-core-sa-2026-006","tags":["vendor-advisory"]},{"url":"https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","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":"LOW","baseScore":2.1,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}}],"credits":[{"lang":"en","value":"IPC Labs","type":"reporter"},{"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":"2026-06-08T19:50:27.408977Z","id":"CVE-2026-47344","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":"2026-06-08T19:50:47.479Z"}}]}}