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CVE-2026-8786: Authorization Bypass in Tencent WeKnora

0
Medium
VulnerabilityCVE-2026-8786cvecve-2026-8786
Published: Mon May 18 2026 (05/18/2026, 03:00:14 UTC)
Source: CVE Database V5
Vendor/Project: Tencent
Product: WeKnora

Description

CVE-2026-8786 is an authorization bypass vulnerability in Tencent WeKnora versions up to 0. 3. 6. The issue exists in the getKnowledgeBaseForInitialization function within the Config API Endpoint, where manipulation of the kbId argument allows bypassing authorization controls. This vulnerability can be exploited remotely without user interaction. The vendor was notified but has not responded or provided a fix. The vulnerability has a medium severity rating with a CVSS score of 5. 3. No official patch or remediation guidance is currently available.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/18/2026, 03:51:34 UTC

Technical Analysis

Tencent WeKnora up to version 0.3.6 contains an authorization bypass vulnerability in the getKnowledgeBaseForInitialization function of the Config API Endpoint. By manipulating the kbId argument, an attacker can bypass authorization checks remotely. The vulnerability has been publicly disclosed, and the vendor has not issued a response or patch. The CVSS 4.0 score is 5.3 (medium severity), indicating a network attack vector with low complexity and no privileges required, but limited impact on confidentiality, integrity, and availability.

Potential Impact

Successful exploitation allows an attacker to bypass authorization controls in Tencent WeKnora, potentially granting unauthorized access to knowledge base initialization data or functionality. The impact is rated medium severity, reflecting limited but non-negligible risk. There is no evidence of active exploitation in the wild.

Mitigation Recommendations

No official patch or remediation is currently available from the vendor. Since the vendor has not responded or provided a fix, users should consider implementing additional access controls or network-level restrictions to limit exposure to the vulnerable API endpoint. Monitor vendor channels for any future advisories or patches. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-05-17T10:23:37.846Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a0a8946ec166c07b04d8807

Added to database: 5/18/2026, 3:36:38 AM

Last enriched: 5/18/2026, 3:51:34 AM

Last updated: 5/18/2026, 6:00:27 AM

Views: 5

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