{"answers":{"affected":"5 open source packages ship an affected version, including github.com/opencloud-eu/opencloud.","exploited":"There is no known exploitation of GHSA-vf5j-r2hw-2hrw in the wild and no public exploit code.","fix":"Upgrade github.com/opencloud-eu/opencloud to a fixed version for your release line: 4.0.3 or 5.0.2.","what":"GHSA-vf5j-r2hw-2hrw is a missing authorization vulnerability in github.com/opencloud-eu/opencloud, published on 5 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-vf5j-r2hw-2hrw and fix it if it is affected.\n\nWhat it is: GHSA-vf5j-r2hw-2hrw is a missing authorization vulnerability in github.com/opencloud-eu/opencloud, published on 5 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 GHSA-vf5j-r2hw-2hrw in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/opencloud-eu/opencloud (Go): affected all versions; no fix listed\n- github.com/opencloud-eu/opencloud (Go): affected from 4.0.0; fixed in 4.0.3\n- github.com/opencloud-eu/opencloud (Go): affected from 4.0.0; fixed in 4.0.3\n- github.com/opencloud-eu/opencloud (Go): affected from 5.0.0; fixed in 5.0.2\n- github.com/opencloud-eu/opencloud (Go): affected from 5.0.0; fixed in 5.0.2\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/GHSA-vf5j-r2hw-2hrw/ (Markdown: https://insights.sbomify.com/GHSA-vf5j-r2hw-2hrw/index.md)","id":"GHSA-vf5j-r2hw-2hrw","markdown":"https://insights.sbomify.com/GHSA-vf5j-r2hw-2hrw/index.md","name":"GHSA-vf5j-r2hw-2hrw","record":{"aliases":["GO-2026-4447"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenCloud file sharing","requires_auth":"low_privilege","summary":"A malicious user can bypass public link scope validation in OpenCloud to access unauthorized resources outside the intended share scope.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"### Impact\n\nA security issue was discovered in [Reva](https://github.com/opencloud-eu/reva) that enables a malicious user to bypass the scope validation of a public link. That allows it to access resources outside the scope of a public link.\n\nOpenCloud uses Reva as one of its core components and thus it is affected.\n\n### Patches\n\nUpdate to OpenCloud version \u003e= 4.0.3 (stable release)\nUpdate to OpenCloud version \u003e= 5.0.2 (rolling release)\n\n### Workarounds\n\nIf projects are unable to update immediately, please implement the following security configuration to disable public link shares temporarily until the final solution for this problem is rolled out.\n\n#### Configuration Adjustment\n\n* Docker Compose: Edit the docker-compose.yml and add `GATEWAY_STORAGE_PUBLIC_LINK_ENDPOINT=“”` (empty string value) in the `environment` section of the `opencloud` container.\n\n#### Verification of Mitigation\n\nExecute the following test: \n- Create a public link for testing. \n- Open the link url in a private (no active login) browser tab. \n- An error page with “unknown error” will be displayed.\n\nThis configuration provides immediate protection and should be implemented immediately. Configuration mitigation is available. It mitigates the problem completely.\n\n### For more information\n\nIf there are questions or comments about this advisory:\n\n- Security Support: [security@opencloud.eu](mailto:security@opencloud.eu)\n- Technical Support: [support@opencloud.eu](mailto:support@opencloud.eu)","ecosystems":["Go"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"OpenCloud Affected by Public Link Exploit","id":"GHSA-vf5j-r2hw-2hrw","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":5,"n_references":null,"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/opencloud-eu/opencloud","purl":"pkg:golang/github.com/opencloud-eu/opencloud","source":"GO-2026-4447"},{"ecosystem":"Go","fixed":["4.0.3"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/opencloud-eu/opencloud","purl":null,"source":"GHSA-vf5j-r2hw-2hrw"},{"ecosystem":"Go","fixed":["4.0.3"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/opencloud-eu/opencloud","purl":"pkg:golang/github.com/opencloud-eu/opencloud","source":"GHSA-vf5j-r2hw-2hrw"},{"ecosystem":"Go","fixed":["5.0.2"],"introduced":["5.0.0"],"last_affected":[],"package":"github.com/opencloud-eu/opencloud","purl":null,"source":"GHSA-vf5j-r2hw-2hrw"},{"ecosystem":"Go","fixed":["5.0.2"],"introduced":["5.0.0"],"last_affected":[],"package":"github.com/opencloud-eu/opencloud","purl":"pkg:golang/github.com/opencloud-eu/opencloud","source":"GHSA-vf5j-r2hw-2hrw"}],"products":null,"published":"2026-02-05","related":[],"sources":[{"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"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A malicious user can bypass public link scope validation in OpenCloud to access unauthorized resources outside the intended share scope.","url":"https://insights.sbomify.com/GHSA-vf5j-r2hw-2hrw/"}