{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30853 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-30853 is a medium-severity path traversal vulnerability in kovidgoyal calibre, published on 13 Mar 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-2026-30853 and fix it if it is affected.\n\nWhat it is: CVE-2026-30853 is a medium-severity path traversal vulnerability in kovidgoyal calibre, published on 13 Mar 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30853 exists.\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-2026-30853/ (Markdown: https://insights.sbomify.com/CVE-2026-30853/index.md)","id":"CVE-2026-30853","markdown":"https://insights.sbomify.com/CVE-2026-30853/index.md","name":"CVE-2026-30853","record":{"aliases":["DEBIAN-CVE-2026-30853","GHSA-7mp7-rfrg-542x","UBUNTU-CVE-2026-30853"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"e-book manager","requires_auth":"none","summary":"An attacker can write arbitrary files to the system by tricking a user into opening a crafted RocketBook file in calibre.","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":5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L","version":"3.1"},"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. Prior to 9.5.0, a path traversal vulnerability in the RocketBook (.rb) input plugin (src/calibre/ebooks/rb/reader.py) allows an attacker to write arbitrary files to any path writable by the calibre process when a user opens or converts a crafted .rb file. This is the same bug class fixed in CVE-2026-26065 for the PDB readers, but the fix was never applied to the RB reader. This vulnerability is fixed in 9.5.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"calibre has a Path Traversal Leading to Arbitrary File Write","id":"CVE-2026-30853","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":"Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled","id":"CVE-2026-30854"},"packages":[],"prev":{"headline":"Caddy: vars_regexp double-expands user input, leaking env vars and files","id":"CVE-2026-30852"},"products":["calibre"],"published":"2026-03-13","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 Vulnerability Enables Arbitrary File Write and Remote Code Execution","id":"CVE-2026-26064","kev_date_added":null,"published":"2026-02-20"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-13","vendors":["kovidgoyal"]},"summary":"An attacker can write arbitrary files to the system by tricking a user into opening a crafted RocketBook file in calibre.","url":"https://insights.sbomify.com/CVE-2026-30853/"}