{"answers":{"affected":"7 open source packages ship an affected version, including github.com/cloudreve/Cloudreve/v3, github.com/cloudreve/Cloudreve and github.com/cloudreve/Cloudreve/v4.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62323 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-62323 is a medium-severity missing authorization vulnerability in cloudreve, published on 31 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-62323 and fix it if it is affected.\n\nWhat it is: CVE-2026-62323 is a medium-severity missing authorization vulnerability in cloudreve, published on 31 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62323 exists.\n\nAffected packages and fixed versions:\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260626022433-f3347130ac48\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260626022433-f3347130ac48\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260626022433-f3347130ac48\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-2026-62323/ (Markdown: https://insights.sbomify.com/CVE-2026-62323/index.md)","id":"CVE-2026-62323","markdown":"https://insights.sbomify.com/CVE-2026-62323/index.md","name":"CVE-2026-62323","record":{"aliases":["GHSA-c3jm-gv5r-9wcp","GO-2026-6104"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Cloudreve file manager","requires_auth":"low_privilege","summary":"Attackers can forge WOPI access tokens to write files via view sessions, allowing unauthorized data modification in Cloudreve.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compromised WOPI viewer with a view session to forge the token suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0.","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":"Cloudreve: Unauthorized file write via WOPI view sessions whose access token secret is ignored","id":"CVE-2026-62323","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":7,"n_references":3,"next":{"headline":"Jodit has incomplete javascript: scheme normalization in sanitizeHTMLElement href check that allows link XSS","id":"CVE-2026-62324"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","source":"GO-2026-6104"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GO-2026-6104"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":null,"source":"GHSA-c3jm-gv5r-9wcp"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GHSA-c3jm-gv5r-9wcp"},{"ecosystem":"Go","fixed":["4.0.0-20260626022433-f3347130ac48"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":null,"source":"GHSA-c3jm-gv5r-9wcp"},{"ecosystem":"Go","fixed":["4.0.0-20260626022433-f3347130ac48"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GHSA-c3jm-gv5r-9wcp"},{"ecosystem":"Go","fixed":["4.0.0-20260626022433-f3347130ac48"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GO-2026-6104"}],"prev":{"headline":"Python Social Auth: Login CSRF in LINE backend (LineOAuth2) — missing OAuth state validation (incomplete fix of 5.0.0 campaign)","id":"CVE-2026-62322"},"products":["cloudreve"],"published":"2026-07-31","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-31","vendors":["cloudreve"]},"summary":"Attackers can forge WOPI access tokens to write files via view sessions, allowing unauthorized data modification in Cloudreve.","url":"https://insights.sbomify.com/CVE-2026-62323/"}