{"answers":{"affected":"4 open source packages ship an affected version, including github.com/filebrowser/filebrowser/v2 and github.com/filebrowser/filebrowser. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-25890 in the wild and no public exploit code.","fix":"Upgrade github.com/filebrowser/filebrowser/v2 to 2.57.1 or later.","what":"CVE-2026-25890 is a high-severity missing authorization vulnerability in filebrowser, published on 9 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-25890 and fix it if it is affected.\n\nWhat it is: CVE-2026-25890 is a high-severity missing authorization vulnerability in filebrowser, published on 9 Feb 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-2026-25890 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.57.1\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.57.1\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.57.1\n- github.com/filebrowser/filebrowser (Go): affected all versions; no fix listed\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-2026-25890/ (Markdown: https://insights.sbomify.com/CVE-2026-25890/index.md)","id":"CVE-2026-25890","markdown":"https://insights.sbomify.com/CVE-2026-25890/index.md","name":"CVE-2026-25890","record":{"aliases":["GHSA-4mh3-h929-w968","GO-2026-4474"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"File Browser","requires_auth":"low_privilege","summary":"Authenticated users can bypass path restrictions to access restricted files by adding multiple slashes to the URL.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"filebrowser","vendor":"filebrowser"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-706","name":"Use of Incorrectly-Resolved Name or Reference"}],"description":"File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, an authenticated user can bypass the application's \"Disallow\" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":"2026-02-19","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-02-19T21:20:27Z","kind":"github_poc","ref":"https://github.com/mbanyamer/CVE-2026-25890-FileBrowser-Access-Control-Bypass","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL","id":"CVE-2026-25890","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Fiber has an Arbitrary File Read in Static Middleware on Windows","id":"CVE-2026-25891"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser","purl":"pkg:golang/github.com/filebrowser/filebrowser","source":"GO-2026-4474"},{"ecosystem":"Go","fixed":["2.57.1"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":null,"source":"GHSA-4mh3-h929-w968"},{"ecosystem":"Go","fixed":["2.57.1"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","source":"GHSA-4mh3-h929-w968"},{"ecosystem":"Go","fixed":["2.57.1"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","source":"GO-2026-4474"}],"prev":{"headline":"File Browser has an Authentication Bypass in User Password Update","id":"CVE-2026-25889"},"products":["filebrowser"],"published":"2026-02-09","related":[{"cvss_score":10,"headline":"File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin","id":"CVE-2026-32760","kev_date_added":null,"published":"2026-03-19"},{"cvss_score":9.1,"headline":"File Browser: TUS Delete Endpoint Bypasses Delete Permission Check","id":"CVE-2026-29188","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":9,"headline":"Cross-site scripting in n/a","id":"CVE-2023-39612","kev_date_added":null,"published":"2023-09-16"},{"cvss_score":8.9,"headline":"FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)","id":"CVE-2026-30934","kev_date_added":null,"published":"2026-03-10"},{"cvss_score":8.8,"headline":"Cross-Site Request Forgery in Filebrowser","id":"CVE-2021-46398","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":8.2,"headline":"File Browser share links remain accessible after Share/Download permissions are revoked","id":"CVE-2026-35604","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":8.1,"headline":"File Browser: Proxy auth auto-provisioned users inherit Execute permission and Commands","id":"CVE-2026-35607","kev_date_added":null,"published":"2026-04-07"}],"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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-10","vendors":["filebrowser"]},"summary":"Authenticated users can bypass path restrictions to access restricted files by adding multiple slashes to the URL.","url":"https://insights.sbomify.com/CVE-2026-25890/"}