{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-8227 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-8227 is a medium-severity path traversal vulnerability in Desktop Client, published on 21 Aug 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-8227 and fix it if it is affected.\n\nWhat it is: CVE-2020-8227 is a medium-severity path traversal vulnerability in Desktop Client, published on 21 Aug 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-8227 in the wild and no public exploit code.\n\nAffected product: Desktop Client. 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-2020-8227/ (Markdown: https://insights.sbomify.com/CVE-2020-8227/index.md)","id":"CVE-2020-8227","markdown":"https://insights.sbomify.com/CVE-2020-8227/index.md","name":"CVE-2020-8227","record":{"aliases":["DEBIAN-CVE-2020-8227","GHSA-64gg-6m36-39px","UBUNTU-CVE-2020-8227"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Desktop Client","requires_auth":"high_privilege","summary":"A malicious Nextcloud server can force the desktop client to store files outside the sync directory due to missing response sanitization.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"desktop","vendor":"nextcloud"}],"cvss":{"score":6.8,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync 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":"Path traversal in Desktop Client","id":"CVE-2020-8227","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"Business logic in Nextcloud Preferred Provider","id":"CVE-2020-8228"},"packages":[],"prev":{"headline":"phpBB Server-Side Request Forgery Vulnerability","id":"CVE-2020-8226"},"products":["Desktop Client"],"published":"2020-08-21","related":[{"cvss_score":9.1,"headline":"Misconfiguration in n/a","id":"CVE-2024-46958","kev_date_added":null,"published":"2024-09-16"},{"cvss_score":7.8,"headline":"Code injection in Desktop Client","id":"CVE-2020-8224","kev_date_added":null,"published":"2020-08-10"},{"cvss_score":7.5,"headline":"Information disclosure in Desktop Client","id":"CVE-2020-8225","kev_date_added":null,"published":"2020-09-18"},{"cvss_score":7.3,"headline":"Untrusted Search Path in Nextcloud Desktop Client","id":"CVE-2021-37617","kev_date_added":null,"published":"2021-08-18"},{"cvss_score":6.9,"headline":"Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders","id":"CVE-2023-28999","kev_date_added":null,"published":"2023-04-04"},{"cvss_score":6.7,"headline":"Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files","id":"CVE-2023-28997","kev_date_added":null,"published":"2023-04-04"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A malicious Nextcloud server can force the desktop client to store files outside the sync directory due to missing response sanitization.","url":"https://insights.sbomify.com/CVE-2020-8227/"}