Tencent WeKnora up to 0.2.11 Private Message access control

Summaryinfo

A vulnerability marked as critical has been reported in Tencent WeKnora up to 0.2.11. Affected is an unknown function of the component Private Message Handler. Performing a manipulation results in access control. This vulnerability is cataloged as CVE-2026-30859. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Tencent WeKnora up to 0.2.11. This affects an unknown code of the component Private Message Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality. The summary by CVE is:

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, a broken access control vulnerability in the database query tool allows any authenticated tenant to read sensitive data belonging to other tenants, including API keys, model configurations, and private messages. The application fails to enforce tenant isolation on critical tables (models, messages, embeddings), enabling unauthorized cross-tenant data access with user-level authentication privileges. This issue has been patched in version 0.2.12.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-30859 since 03/05/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 0.2.12 eliminates this vulnerability.

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Productinfo

Vendor

• Tencent

Name

• WeKnora

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11

Website

• Product: https://github.com/Tencent/WeKnora/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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