Vulnerability · Published Mar 7, 2026 · Assigned by GitHub_M
CVE-2026-30861WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation
Critical 10.0
In plain English
A critical-severity OS command injection in WeKnora from Tencent. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution (RCE) vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user registration, meaning any attacker can create an account and exploit the command injection flaw. Despite implementing a whitelist for allowed commands (npx, uvx) and blacklists for dangerous arguments and environment variables, the validation can be bypassed using the -p flag with npx node. This allows any attacker to execute arbitrary commands with the application's privileges, leading to complete system compromise. This issue has been patched in version 0.2.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/Tencent/WeKnora | 0.2.10 | GHSA-r55h-3rwj-hcmg |
| Go | github.com/Tencent/WeKnora | 0.2.10 | GO-2026-4645 |
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/Tencent/WeKnora/security/advisories/GHSA-r55h-3rwj-hcmg x_refsource_CONFIRM