{"apiVersion":"1.0","identifier":"CVE-2026-77139","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":"2026-08-25T09:17:34","lastModifiedAt":"2026-08-26T17:13:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77139","cvssScore":6,"cvssVector":"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","epssProbability":0.00292,"riskScore":0.62,"affectedProduct":"TYPO3 Mask","affectedVersions":"unknown","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77139","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77139","en":"https://www.redsauce.net/en/cves/CVE-2026-77139","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77139","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77139","de":"https://www.redsauce.net/de/cves/CVE-2026-77139","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77139","el":"https://www.redsauce.net/el/cves/CVE-2026-77139"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77139"}}