Vulnerability · Published Mar 7, 2026 · Assigned by GitHub_M
CVE-2026-30857WeKnora: Unauthorized Cross‑Tenant Knowledge Base Cloning
Medium 5.3
In plain English
A medium-severity authorization bypass via user-controlled key in WeKnora from Tencent. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/Tencent/WeKnora | 0.3.0 | GHSA-8rf9-c59g-f82f |
| Go | github.com/Tencent/WeKnora | no fix listed | GO-2026-4640 |
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/Tencent/WeKnora/security/advisories/GHSA-8rf9-c59g-f82f x_refsource_CONFIRM