{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26064 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-26064 is a critical path traversal vulnerability in kovidgoyal calibre, published on 20 Feb 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-2026-26064 and fix it if it is affected.\n\nWhat it is: CVE-2026-26064 is a critical path traversal vulnerability in kovidgoyal calibre, published on 20 Feb 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-2026-26064 in the wild and no public exploit code.\n\nAffected product: kovidgoyal calibre. 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-2026-26064/ (Markdown: https://insights.sbomify.com/CVE-2026-26064/index.md)","id":"CVE-2026-26064","markdown":"https://insights.sbomify.com/CVE-2026-26064/index.md","name":"CVE-2026-26064","record":{"aliases":["DEBIAN-CVE-2026-26064","GHSA-72ch-3hqc-pgmp","UBUNTU-CVE-2026-26064"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"e-book manager","requires_auth":"none","summary":"Attackers can exploit path traversal in calibre to write arbitrary files, enabling remote code execution on Windows via startup folder injection.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"calibre","vendor":"calibre-ebook"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below contain a Path Traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows, this leads to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. Function extract_pictures only checks startswith('Pictures'), and does not sanitize '..' sequences. calibre's own ZipFile.extractall() in utils/zipfile.py does sanitize '..' via _get_targetpath(), but extract_pictures() bypasses this by using manual zf.read() + open(). This issue has been fixed in version 9.3.0.","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":"calibre: Path Traversal Vulnerability Enables Arbitrary File Write and Remote Code Execution","id":"CVE-2026-26064","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution","id":"CVE-2026-26065"},"packages":[],"prev":{"headline":"CediPay Affected by Improper Input Validation in Payment Processing","id":"CVE-2026-26063"},"products":["calibre"],"published":"2026-02-20","related":[{"cvss_score":9.8,"headline":"Command injection in Calibre","id":"CVE-2011-4124","kev_date_added":null,"published":"2021-10-27"},{"cvss_score":9.8,"headline":"Privilege escalation in Calibre","id":"CVE-2011-4125","kev_date_added":null,"published":"2021-10-27"},{"cvss_score":9.3,"headline":"calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution","id":"CVE-2026-26065","kev_date_added":null,"published":"2026-02-20"},{"cvss_score":8.6,"headline":"calibre has a Path Traversal Leading to Arbitrary File Write and Potential Code Execution","id":"CVE-2026-25635","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":8.2,"headline":"calibre has a path traversal vulnerability","id":"CVE-2026-33206","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":8.2,"headline":"calibre has a Path Traversal Leading to Arbitrary File Corruption and Code Execution","id":"CVE-2026-25636","kev_date_added":null,"published":"2026-02-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"total"},"state":"PUBLISHED","updated":"2026-02-20","vendors":["kovidgoyal"]},"summary":"Attackers can exploit path traversal in calibre to write arbitrary files, enabling remote code execution on Windows via startup folder injection.","url":"https://insights.sbomify.com/CVE-2026-26064/"}