TI-2026-23685 Aliases CVE-2026-30856 GHSA-67q9-58vj-32qx

WeKnora: Tool Execution Hijacking via Ambigous Naming Convention In MCP client and Indirect Prompt Injection

HIGH 66CWE-706Published 2026-03-07 · Updated 2026-03-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · Low · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a vulnerability involving tool name collision and indirect prompt injection allows a malicious remote MCP server to hijack tool execution. By exploiting an ambiguous naming convention in the MCP client (mcp_{service}_{tool}), an attacker can register a malicious tool that overwrites a legitimate one (e.g., tavily_extract). This enables the attacker to redirect LLM execution flow, exfiltrate system prompts, context, and potentially execute other tools with the user's privileges. This issue has been patched in version 0.3.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0029 21st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed WeKnora (Tencent): 0.3.0github.com/Tencent/WeKnora (Go): 0.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Tencent	WeKnora	before 0.3.0	0.3.0	Patch available	CNA
—	github.com/Tencent/WeKnora (Go)	before 0.3.0	0.3.0	Patch available	GHSA-67q9-58vj-32qx

WeKnora VendorTencent Affected before 0.3.0 Fixed in 0.3.0 Patch available CNA
github.com/Tencent/WeKnora (Go) Vendor— Affected before 0.3.0 Fixed in 0.3.0 Patch available GHSA-67q9-58vj-32qx

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tencent:weknora::::::::	before 0.3.0	Vulnerable	Tencent

cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:* Versions before 0.3.0 Vulnerable ·Tencent

Remediation

Fix · CNA WeKnora (Tencent) Fixed in 0.3.0
Fix · GHSA-67q9-58vj-32qx github.com/Tencent/WeKnora (Go) Fixed in 0.3.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-30856
2026-10-03 Alias added: GHSA-67q9-58vj-32qx

References

Exploit 1

https://github.com/Tencent/WeKnora/security/advisories/GHSA-67q9-58vj-32qx

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-30856

Other 4

TI-2026-23690 WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation CVSS 3.1CRITICAL 10.0
TI-2026-23689 WeKnora: Remote Code Execution via SQL Injection Bypass in AI Database Query Tool CVSS 3.1CRITICAL 10.0
TI-2026-18215 WeKnora has Command Injection in MCP stdio test CVSS 3.1CRITICAL 10.0
TI-2026-18214 WeKnora vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
TI-2026-23684 WeKnora: Broken Access Control in Tenant Management CVSS 3.1HIGH 8.8
TI-2025-10116 Tencent WeKnora test testEmbeddingModel server-side request forgery CVSS 4.0MEDIUM 6.9

See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences