CVE-2026-30856
MEDIUM
GHSA-67q9-58vj-32qx
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
Lifecycle Timeline
3Tags
Description
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.
Analysis
Tool name collision in WeKnora's MCP client integration allows remote attackers with network access to register malicious tools that overwrite legitimate ones, enabling prompt injection attacks and potential data exfiltration. An attacker exploiting this vulnerability can redirect LLM execution to steal system prompts and context data, or execute arbitrary tools with the privileges of authenticated users. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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