{"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":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34528 exists.","fix":"Upgrade github.com/filebrowser/filebrowser/v2 to 2.62.2 or later.","what":"CVE-2026-34528 is a high-severity vulnerability in filebrowser, published on 1 Apr 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-2026-34528 and fix it if it is affected.\n\nWhat it is: CVE-2026-34528 is a high-severity vulnerability in filebrowser, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34528 exists.\n\nAffected packages and fixed versions:\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.62.2\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.62.2\n- github.com/filebrowser/filebrowser/v2 (Go): affected all versions; fixed in 2.62.2\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-2026-34528/ (Markdown: https://insights.sbomify.com/CVE-2026-34528/index.md)","id":"CVE-2026-34528","markdown":"https://insights.sbomify.com/CVE-2026-34528/index.md","name":"CVE-2026-34528","record":{"aliases":["GHSA-x8jc-jvqm-pm3f","GO-2026-5747"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":true,"product_category":"File Browser","requires_auth":"none","summary":"Unauthenticated users can gain shell execution rights if signup and server-side execution are enabled with specific default permissions.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"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:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"description":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the signupHandler in File Browser applies default user permissions via d.settings.Defaults.Apply(user), then strips only Admin. The Execute permission and Commands list from the default user template are not stripped. When an administrator has enabled signup, server-side execution, and set Execute=true in the default user template, any unauthenticated user who self-registers inherits shell execution capabilities and can run arbitrary commands on the server. This issue has been patched in version 2.62.2.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"File Browser's Signup Grants Execution Permissions When Default Permissions Includes Execution","id":"CVE-2026-34528","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":4,"n_references":2,"next":{"headline":"File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file","id":"CVE-2026-34529"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser","purl":"pkg:golang/github.com/filebrowser/filebrowser","source":"GO-2026-5747"},{"ecosystem":"Go","fixed":["2.62.2"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":null,"source":"GHSA-x8jc-jvqm-pm3f"},{"ecosystem":"Go","fixed":["2.62.2"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","source":"GHSA-x8jc-jvqm-pm3f"},{"ecosystem":"Go","fixed":["2.62.2"],"introduced":["0"],"last_affected":[],"package":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","source":"GO-2026-5747"}],"prev":{"headline":"Sandboxie-Plus EditPassword hash entropy reduced from 160 bits to 80 bits due to incorrect nibble extraction","id":"CVE-2026-34527"},"products":["filebrowser"],"published":"2026-04-01","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)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["filebrowser"]},"summary":"Unauthenticated users can gain shell execution rights if signup and server-side execution are enabled with specific default permissions.","url":"https://insights.sbomify.com/CVE-2026-34528/"}