Vulnerability Report

CVE-2026-30857

Title: Cross-Tenant Authorization Bypass in knowledge base copy endpoint

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-30857.

CWE Category CWE-639

Published Date Mar 07, 2026

Modified Date Mar 09, 2026

Exploit Status Not Found

Score 5.3 CVSS v3.1

Exploit Probability (EPSS)

0.04%

Vulnerability Summary

CVE-2026-30857: 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.

Impacted Vendors

tencent 1

Reference Links

https://github.com/Tencent/WeKnora/security/advisories/GHSA-8rf9-c59g-f82f

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.3

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-30857 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

March 09, 2026 MODIFIED

Vulnerability data updated via NVD.

March 09, 2026 MODIFIED

Vulnerability data updated via NVD.

March 09, 2026 MODIFIED

Vulnerability data updated via NVD.

March 07, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.