{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63266 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-63266 is a medium-severity path traversal vulnerability in The Document Foundation LibreOffice, published on 5 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-63266 and fix it if it is affected.\n\nWhat it is: CVE-2026-63266 is a medium-severity path traversal vulnerability in The Document Foundation LibreOffice, published on 5 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-63266 in the wild and no public exploit code.\n\nAffected product: The Document Foundation LibreOffice. 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-2026-63266/ (Markdown: https://insights.sbomify.com/CVE-2026-63266/index.md)","id":"CVE-2026-63266","markdown":"https://insights.sbomify.com/CVE-2026-63266/index.md","name":"CVE-2026-63266","record":{"aliases":["DEBIAN-CVE-2026-63266","ECHO-c6b4-711f-c38e","GHSA-5436-5r9x-m4jv","MINI-6xrr-hxr3-w4qj","UBUNTU-CVE-2026-63266"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"LibreOffice Calc","requires_auth":"none","summary":"An attacker can write arbitrary files to any user-writable location by crafting a LibreOffice Calc document with a malicious Firebird database link.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Document Fdn.","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private 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":true,"headline":"Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality","id":"CVE-2026-63266","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":"LFI and GET SSRF via calcext:data-mappings and csv provider","id":"CVE-2026-63267"},"packages":[],"prev":{"headline":"Cross-site request forgery in Advanced Module Manager extension for Joomla","id":"CVE-2026-63265"},"products":["LibreOffice"],"published":"2026-10-05","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":"2026-10-05","vendors":["The Document Foundation"]},"summary":"An attacker can write arbitrary files to any user-writable location by crafting a LibreOffice Calc document with a malicious Firebird database link.","url":"https://insights.sbomify.com/CVE-2026-63266/"}