{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77139 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77139 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77139 is a medium-severity path traversal vulnerability in TYPO3 Extension \"Mask\", published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-77139 and fix it if it is affected.\n\nWhat it is: CVE-2026-77139 is a medium-severity path traversal vulnerability in TYPO3 Extension \"Mask\", published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-77139 in the wild and no public exploit code.\n\nAffected product: TYPO3 Extension \"Mask\". No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-77139/ (Markdown: https://insights.sbomify.com/CVE-2026-77139/index.md)","id":"CVE-2026-77139","markdown":"https://insights.sbomify.com/CVE-2026-77139/index.md","name":"CVE-2026-77139","record":{"aliases":["GHSA-q7c6-98mw-7m48"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["data_modify","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"TYPO3 Mask extension","requires_auth":"low_privilege","summary":"Authenticated backend users can exploit path traversal in the Mask extension to create or delete HTML files outside the intended template directory.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TYPO3","cpe":[],"cvss":{"score":6,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Path Traversal in extension \"Mask\" (mask)","id":"CVE-2026-77139","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Broken Access Control in extension \"Telephone Directory\" (telephonedirectory)","id":"CVE-2026-77140"},"packages":[],"prev":{"headline":"Remote Code Execution in extension \"HTML5 Video Player vs. Powermail\" (html5videoplayer_powermail)","id":"CVE-2026-77138"},"products":["Extension \"Mask\""],"published":"2026-08-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-25","vendors":["TYPO3"]},"summary":"Authenticated backend users can exploit path traversal in the Mask extension to create or delete HTML files outside the intended template directory.","url":"https://insights.sbomify.com/CVE-2026-77139/"}