Cross-Tenant Authorization Bypass in WeKnora Framework by Tencent
CVE-2026-30857

5.3MEDIUM

Key Information:

Vendor

Tencent

Status
Weknora
Vendor
CVE Published:
7 March 2026

What is CVE-2026-30857?

The WeKnora framework, which leverages LLM technology for deep document understanding, is susceptible to a cross-tenant authorization bypass vulnerability in its knowledge base copy endpoint. This flaw enables authenticated users to clone another tenant's knowledge base if they can determine the source knowledge base ID. As a result, this vulnerability poses a significant risk of bulk data exfiltration, potentially allowing unauthorized access to documents and FAQs across different tenants. The issue has been securely resolved in version 0.3.0.

Affected Version(s)

WeKnora < 0.3.0

References

https://github.com/Tencent/WeKnora/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.