CVE-2026-30857 MEDIUM

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

Vendor Tencent
Product WeKnora
Weakness CWE-639 · IDOR
Published March 7, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 7, 2026 CVE published
March 9, 2026 Record updated