{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77139", "assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "state": "PUBLISHED", "assignerShortName": "TYPO3", "dateReserved": "2026-08-20T13:10:15.962Z", "datePublished": "2026-08-25T09:00:37.199Z", "dateUpdated": "2026-08-25T12:26:38.507Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "shortName": "TYPO3", "dateUpdated": "2026-08-25T12:26:38.507Z"}, "title": "Path Traversal in extension \"Mask\" (mask)", "datePublic": "2026-08-25T09:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}, {"lang": "en", "cweId": "CWE-73", "description": "CWE-73 External Control of File Name or Path", "type": "CWE"}]}], "affected": [{"vendor": "TYPO3", "product": "Extension \"Mask\"", "collectionURL": "https://packagist.org/", "packageName": "mask/mask", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.11", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.3.12", "versionType": "semver"}], "defaultStatus": "unaffected"}], "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.", "supportingMedia": [{"type": "text/html", "base64": false, "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 <code>.html</code> files outside the configured template directory."}]}], "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"}}], "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"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://packagist.org/", "defaultStatus": "unaffected", "packageName": "mask/mask", "product": "Extension \"Mask\"", "vendor": "TYPO3", "versions": [{"lessThan": "9.0.11", "status": "affected", "version": "9.0.0", "versionType": "semver"}, {"lessThan": "8.3.12", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a"}], "cveTags": [], "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."}], "id": "CVE-2026-77139", "lastModified": "2026-08-25T09:17:34.647", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}, "published": "2026-08-25T09:17:34.647", "references": [{"source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-017"}], "sourceIdentifier": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-73"}], "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}

{}

{"created": "2026-08-25T10:45:03.470461+00:00", "updated": "2026-08-25T10:45:03.470466+00:00", "vendors": []}