CVE-2026-23744 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 67.5% (pctl 99)
Patch early
A public exploit exists.
Description
MCPJam inspector is the local-first development platform for MCP servers. Versions 1.4.2 and earlier are vulnerable to remote code execution (RCE) vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP server, leading to RCE. Since MCPJam inspector by default listens on 0.0.0.0 instead of 127.0.0.1, an attacker can trigger the RCE remotely via a simple HTTP request. Version 1.4.3 contains a patch.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 67.52% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-306 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2026-01-16 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| mcpjam | inspector |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | MCPJam Inspector - Remote Code Execution | 2026-07-07 |
References
→ the Explorer · watch your stack · NVD