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EPSS 0.3%top 81%

CVE-2026-8786: Authorization Bypass in Tencent WeKnora

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

Description

A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

github.com/tencent/weknora
pkg:golang/github.com/tencent/weknora
Affected versions
=0.3.0=0.3.1=0.3.2=0.3.3=0.3.4=0.3.5=0.3.6

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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: 05/18/2026, 03:36:38 UTC

Last enriched: 05/18/2026, 03:51:34 UTC

Last updated: 07/31/2026, 19:23:00 UTC

Views: 111

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