{"answers":{"affected":"5 open source packages ship an affected version, including github.com/cloudreve/Cloudreve/v4, github.com/cloudreve/Cloudreve and github.com/cloudreve/Cloudreve/v3.","exploited":"There is no known exploitation of CVE-2026-77637 in the wild and no public exploit code.","fix":"Upgrade github.com/cloudreve/Cloudreve/v4 to 4.0.0-20260715070110-bce08f88e9d8 or later.","what":"CVE-2026-77637 is a low-severity missing authorization vulnerability in cloudreve, published on 22 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-77637 and fix it if it is affected.\n\nWhat it is: CVE-2026-77637 is a low-severity missing authorization vulnerability in cloudreve, published on 22 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-77637 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260715070110-bce08f88e9d8\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260715070110-bce08f88e9d8\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260715070110-bce08f88e9d8\n- github.com/cloudreve/Cloudreve (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (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-2026-77637/ (Markdown: https://insights.sbomify.com/CVE-2026-77637/index.md)","id":"CVE-2026-77637","markdown":"https://insights.sbomify.com/CVE-2026-77637/index.md","name":"CVE-2026-77637","record":{"aliases":["GHSA-w89x-c962-c44g","GO-2026-6576"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Cloudreve file manager","requires_auth":"high_privilege","summary":"Attackers with read-only OAuth tokens can perform state-changing admin actions like sending emails or probing WOPI endpoints in Cloudreve.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":3.8,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET(\"wopi\") and tool.POST(\"mail\") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token's intended read-only authorization boundary. This issue is fixed in version 4.18.0.","ecosystems":["Go"],"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":"Cloudreve: Privilege Scope Bypass: State-Mutating Admin Operations Accessible via Read-Only OAuth Scope","id":"CVE-2026-77637","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":5,"n_references":3,"next":{"headline":"Race condition in Tor","id":"CVE-2026-77638"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","source":"GO-2026-6576"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GO-2026-6576"},{"ecosystem":"Go","fixed":["4.0.0-20260715070110-bce08f88e9d8"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":null,"source":"GHSA-w89x-c962-c44g"},{"ecosystem":"Go","fixed":["4.0.0-20260715070110-bce08f88e9d8"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GHSA-w89x-c962-c44g"},{"ecosystem":"Go","fixed":["4.0.0-20260715070110-bce08f88e9d8"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GO-2026-6576"}],"prev":{"headline":"CakePHP: FunctionsBuilder::jsonValue() vulerable to SQL injection with PostgresDriver","id":"CVE-2026-77635"},"products":["cloudreve"],"published":"2026-09-22","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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-09-22","vendors":["cloudreve"]},"summary":"Attackers with read-only OAuth tokens can perform state-changing admin actions like sending emails or probing WOPI endpoints in Cloudreve.","url":"https://insights.sbomify.com/CVE-2026-77637/"}