Remote Code Execution Vulnerability in LangBot IM Bot Platform
CVE-2026-54449

8.8HIGH

Key Information:

Vendor

Langbot-app

Status
Langbot
Vendor
CVE Published:
20 August 2026

What is CVE-2026-54449?

The LangBot IM Bot Platform has a serious vulnerability in versions 4.10.7 and earlier, where authenticated users can manipulate the STDIO MCP server configuration without proper authorization controls. This flaw allows an attacker with a legitimate account to craft malicious configurations that execute arbitrary commands on the server, potentially leading to data leaks, unauthorized modifications, and service disruptions. As of now, no remedial updates have been released to mitigate this issue.

Affected Version(s)

LangBot <= 4.10.7

References

https://github.com/langbot-app/LangBot/security/advisorie...
x_refsource_CONFIRM
https://www.ox.security/blog/mcp-supply-chain-advisory-rc...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.