{"answers":{"affected":"2 open source packages ship an affected version, including rubyzip.","exploited":"There is no known exploitation of CVE-2026-85396 in the wild and no public exploit code.","fix":"Upgrade rubyzip to 3.4.0 or later.","what":"CVE-2026-85396 is a high-severity path traversal vulnerability in rubyzip, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-85396 and fix it if it is affected.\n\nWhat it is: CVE-2026-85396 is a high-severity path traversal vulnerability in rubyzip, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-85396 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- rubyzip (RubyGems): affected all versions; fixed in 3.4.0\n- rubyzip (RubyGems): affected all versions; fixed in 3.4.0\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-2026-85396/ (Markdown: https://insights.sbomify.com/CVE-2026-85396/index.md)","id":"CVE-2026-85396","markdown":"https://insights.sbomify.com/CVE-2026-85396/index.md","name":"CVE-2026-85396","record":{"aliases":["AZL-99087","DEBIAN-CVE-2026-85396","GHSA-47m2-wp7j-p9vc","MINI-6fhm-99fq-cm43","MINI-836c-vm32-rwwj","MINI-c4hj-5g5j-9qr8","MINI-c8g3-786v-p5mh","MINI-f8r3-4p84-p725","MINI-j98v-3fqp-c5rm","MINI-mmwg-482c-wq62","MINI-v74c-p6mv-pvrr","MINI-v7fr-g9cj-rjpm","MINI-wjjp-xh9r-55wq","UBUNTU-CVE-2026-85396"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby zip library","requires_auth":"none","summary":"Attackers can write files outside the intended extraction directory in rubyzip by crafting archive entries with sibling-directory prefixes.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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":"rubyzip versions before 3.4.0 contain a path traversal vulnerability in Zip::Entry#extract that fails to properly validate extraction paths using prefix comparison without trailing separators. Attackers can craft archive entries with names like ../upload_backup/owned.sh to write files outside the intended extraction directory into sibling paths sharing the destination prefix.","ecosystems":["RubyGems"],"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":"rubyzip before 3.4.0 Path Traversal in Zip::Entry#extract via Sibling-Directory Prefix","id":"CVE-2026-85396","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":6,"next":{"headline":"code-projects Hospital Information System addReq.php findBySearch sql injection","id":"CVE-2026-85397"},"packages":[{"ecosystem":"RubyGems","fixed":["3.4.0"],"introduced":["0"],"last_affected":[],"package":"rubyzip","purl":null,"source":"GHSA-47m2-wp7j-p9vc"},{"ecosystem":"RubyGems","fixed":["3.4.0"],"introduced":["0"],"last_affected":[],"package":"rubyzip","purl":"pkg:gem/rubyzip","source":"GHSA-47m2-wp7j-p9vc"}],"prev":{"headline":"UnoPim before 2.1.3 Missing Authorization on Integration Management Routes","id":"CVE-2026-85395"},"products":["rubyzip"],"published":"2026-09-03","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-03","vendors":["rubyzip"]},"summary":"Attackers can write files outside the intended extraction directory in rubyzip by crafting archive entries with sibling-directory prefixes.","url":"https://insights.sbomify.com/CVE-2026-85396/"}