{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82980 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82980 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82980 is a medium-severity missing authorization vulnerability in Nextcloud Files Lock, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82980 and fix it if it is affected.\n\nWhat it is: CVE-2026-82980 is a medium-severity missing authorization vulnerability in Nextcloud Files Lock, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-82980 in the wild and no public exploit code.\n\nAffected product: Nextcloud Files Lock. 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-2026-82980/ (Markdown: https://insights.sbomify.com/CVE-2026-82980/index.md)","id":"CVE-2026-82980","markdown":"https://insights.sbomify.com/CVE-2026-82980/index.md","name":"CVE-2026-82980","record":{"aliases":["GHSA-3vwx-p83m-w7p5"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Nextcloud Files Lock","requires_auth":"low_privilege","summary":"Authenticated users can lock or unlock other users' files via WebDAV paths, causing denial of service and bypassing lock protections.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables:\n\nCross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves).\nLock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Missing authorization in Files Lock","id":"CVE-2026-82980","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Business logic in Approval","id":"CVE-2026-82982"},"packages":[],"prev":{"headline":"Improper Neutralization of CRLF Sequences ('CRLF Injection') in docker-mailbox","id":"CVE-2026-82973"},"products":["Files Lock"],"published":"2026-09-18","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":"2026-09-18","vendors":["Nextcloud"]},"summary":"Authenticated users can lock or unlock other users' files via WebDAV paths, causing denial of service and bypassing lock protections.","url":"https://insights.sbomify.com/CVE-2026-82980/"}