{"id":"CVE-2026-23989","aliases":["GHSA-9j2f-3rj3-wgpg","GO-2026-4444"],"url":"https://o3.security/vulnerability/CVE-2026-23989","summary":"REVA Public Link Exploit","details":"REVA is an interoperability platform. Prior to 2.42.3 and 2.40.3, a bug in the GRPC authorization middleware of the \"Reva\" component of OpenCloud allows a malicious user to bypass the scope verification of a public link. By exploiting this via the the \"archiver\" service this can be leveraged to create an archive (zip or tar-file) containing all resources that this creator of the public link has access to. This vulnerability is fixed in 2.42.3 and 2.40.3.","published":"2026-02-06T18:28:25.075Z","modified":"2026-07-31T18:31:38.031085279Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/opencloud-eu/reva/v2","fixedVersion":"2.40.3"},{"ecosystem":"Go","name":"github.com/opencloud-eu/reva/v2","fixedVersion":"2.42.3"}],"fix":{"url":"https://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1","label":"opencloud-eu/reva@95aa2bc"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23989.json"},{"type":"ADVISORY","url":"https://github.com/opencloud-eu/reva/security/advisories/GHSA-9j2f-3rj3-wgpg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23989"},{"type":"FIX","url":"https://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:31:38.031085279Z"}}