CVE-2026-22688CWE-77

WeKnora has Command Injection in MCP stdio test

Critical · published January 10, 2026

CVSS v3.1
10.0
EPSS
2%
Percentile
79.9
In the wild
Unconfirmed
What it is

🚨 An authenticated user can wield the power of command injection in WeKnora before version 0.2.5, sending the server on a wild subprocess spree! 🔥 Think of this as allowing a guest to reprogram the hotel’s electronic door locks—once they have access, they can let themselves into any room they choose without challenge. In this scenario, an attacker can inject commands that the server will run, opening the door to serious business! An attacker could execute arbitrary commands on the server, potentially leading to a complete takeover. They might read sensitive data, alter configurations, or even install malicious software. The consequences can be absolutely devastating, as it puts your entire document processing system in jeopardy!

Put simply

Think of this as allowing a guest to reprogram the hotel’s electronic door locks—once they have access, they can let themselves into any room they choose without challenge. In this scenario, an attacker can inject commands that the server will run, opening the door to serious business! This command injection vulnerability occurs when authenticated users manipulate the stdio_config.command/args in the MCP stdio settings, allowing the server to execute commands of their choosing without proper validation.

What to do

An attacker could execute arbitrary commands on the server, potentially leading to a complete takeover. They might read sensitive data, alter configurations, or even install malicious software. The consequences can be absolutely devastating, as it puts your entire document processing system in jeopardy! To protect your system, immediately upgrade to WeKnora version 0.2.5 or higher. Review your user permissions to ensure that only trusted users have access to sensitive configurations. Additionally, consider implementing security measures like input validation and command whitelisting to further mitigate risks. You've got this! By patching up and tightening user access, you can keep your system safe and sound! 🛡️

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01936 · 79.9th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-01-10T03:41Z
EPSS history
Timeline
  • 10 JAN 03:41Z
    WeKnora has Command Injection in MCP stdio test
    cvelistv5