CVE-2026-30857: WeKnora has Unauthorized Cross‑Tenant Knowledge Base Cloning

March 6, 2026 (updated March 9, 2026)

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, making the impact critical.

References

github.com/Tencent/WeKnora
github.com/Tencent/WeKnora/security/advisories/GHSA-8rf9-c59g-f82f
github.com/advisories/GHSA-8rf9-c59g-f82f
nvd.nist.gov/vuln/detail/CVE-2026-30857

Code Behaviors & Features

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