CVE-2026-8786 Details
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.
An authorization bypass vulnerability has been identified in Tencent WeKnora versions through 0.3.6. The issue resides in the Config API Endpoint, specifically within the 'getKnowledgeBaseForInitialization' function in 'internal/handler/initialization.go'. This vulnerability allows authenticated users to bypass authorization and access or modify Knowledge Base configurations of other tenants. The flaw can be exploited remotely, leading to unauthorized cross-tenant data access and manipulation.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 18, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/YLChen-007/1cdc50418f29af7ae671466425e52c7b | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/812172 | [email protected] | ExploitThird Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/364410 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/364410/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tencent weknora | <= 0.3.6 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 19, 2026 | Initial Analysis | [email protected] |
| May 18, 2026 | New CVE Received | [email protected] |