{"cve":"CVE-2026-30857","nvd":{"published":"2026-03-07T17:15:53.370","modified":"2026-06-17T10:33:02.683","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3},"cwes":["CWE-639"],"references":["https://github.com/Tencent/WeKnora/security/advisories/GHSA-8rf9-c59g-f82f"],"products":["tencent:weknora"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-30857","score":0.00231,"percentile":0.14046,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8rf9-c59g-f82f","url":"https://osv.dev/vulnerability/GHSA-8rf9-c59g-f82f","summary":"WeKnora has Unauthorized Cross‑Tenant Knowledge Base Cloning","modified":"2026-03-23T04:56:18.889051174Z","packages":[{"ecosystem":"Go","name":"github.com/Tencent/WeKnora","purl":"pkg:golang/github.com/Tencent/WeKnora","ranges":["<0.3.0"],"fixed":["0.3.0"]}]},{"id":"GO-2026-4640","url":"https://osv.dev/vulnerability/GO-2026-4640","summary":"WeKnora has Unauthorized Cross‑Tenant Knowledge Base Cloning in github.com/Tencent/WeKnora","modified":"2026-03-23T04:52:47.798573Z","packages":[{"ecosystem":"Go","name":"github.com/Tencent/WeKnora","purl":"pkg:golang/github.com/Tencent/WeKnora","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}