{"id":"CVE-2026-30857","aliases":["GHSA-8rf9-c59g-f82f","GO-2026-4640"],"url":"https://o3.security/vulnerability/CVE-2026-30857","summary":"WeKnora: Unauthorized Cross‑Tenant Knowledge Base Cloning","details":"WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a cross-tenant authorization bypass in the knowledge base copy endpoint allows any authenticated user to clone (duplicate) another tenant’s knowledge base into their own tenant by knowing/guessing the source knowledge base ID. This enables bulk data exfiltration (document/FAQ content) across tenants. This issue has been patched in version 0.3.0.","published":"2026-03-07T16:33:45.566Z","modified":"2026-07-31T18:31:43.610418318Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/Tencent/WeKnora","fixedVersion":"0.3.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30857.json"},{"type":"ADVISORY","url":"https://github.com/Tencent/WeKnora/security/advisories/GHSA-8rf9-c59g-f82f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30857"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:31:43.610418318Z"}}