{"id":"CVE-2026-77139","state":"PUBLISHED","title":"Path Traversal in extension \"Mask\" (mask)","description":"The extension fails to validate a client-supplied template element key before using it to build file paths for saving and deleting Mask template files. An authenticated backend user with access to the Mask module can supply a key containing path traversal sequences to create or delete .html files outside the configured template directory.","publishedAt":"2026-08-25T09:00:37.199Z","updatedAt":"2026-08-25T14:04:39.871Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","source":"TYPO3"},"assigner":"TYPO3","products":["TYPO3 Extension \"Mask\""],"affected":[{"vendor":"TYPO3","product":"Extension \"Mask\"","packageName":"mask/mask","defaultStatus":"unaffected","versions":[{"version":"9.0.0","status":"affected","lessThan":"9.0.11","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.12","versionType":"semver"}],"collectionURL":"https://packagist.org/"}],"references":["https://typo3.org/security/advisory/typo3-ext-sa-2026-017"],"weaknesses":["CWE-22","CWE-73"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/77xxx/CVE-2026-77139.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-77139","state":"PUBLISHED","datePublished":"2026-08-25T09:00:37.199Z","dateUpdated":"2026-08-25T14:04:39.871Z","assignerShortName":"TYPO3","assignerOrgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","dateReserved":"2026-08-20T13:10:15.962Z"},"containers":{"cna":{"title":"Path Traversal in extension \"Mask\" (mask)","descriptions":[{"lang":"en","value":"The extension fails to validate a client-supplied template element key before using it to build file paths for saving and deleting Mask template files. An authenticated backend user with access to the Mask module can supply a key containing path traversal sequences to create or delete .html files outside the configured template directory."}],"affected":[{"vendor":"TYPO3","product":"Extension \"Mask\"","packageName":"mask/mask","defaultStatus":"unaffected","versions":[{"version":"9.0.0","status":"affected","lessThan":"9.0.11","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.12","versionType":"semver"}],"collectionURL":"https://packagist.org/"}],"references":[{"url":"https://typo3.org/security/advisory/typo3-ext-sa-2026-017","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","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,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"},{"cweId":"CWE-73","lang":"en","description":"CWE-73 External Control of File Name or Path","type":"CWE"}]}],"providerMetadata":{"shortName":"TYPO3","orgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","dateUpdated":"2026-08-25T12:26:38.507Z"},"datePublic":"2026-08-25T09:00:00.000Z","credits":[{"lang":"en","value":"Seungbin Yang","type":"reporter"},{"lang":"en","value":"Christian Kuhn","type":"reporter"},{"lang":"en","value":"Nikita Hovratov","type":"remediation developer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T14:04:32.856274Z","id":"CVE-2026-77139","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-25T14:04:39.871Z"}}]}}}