Auth bypass in Mcpjam Inspector
CVE-2026-23744
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 ins…
Vulnerability class: Broken Authentication
EPSS: 0.384 (98.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mcpjam Inspector — versions <= 1.4.2
Weakness classification (CWE)
Public proof-of-concept exploits
- ibreakthingsforaliving/CVE-2026-23744-PoC
- thisisish/HTB-DevHub
- SrGinebras/CVE-2026-23744-RCE-for-MCPjam-inspector-v1.4.2
- alisster00/CVE-2026-23744-RCE
- SuriyaBoon/DevHub-HackTheBox-ss11
- 0xg00se/CVE-2026-23744-script
- ctzisme/CVE-2026-23744
- FrenzisRed/CVE-2026-23744
- timgad794/DevHub-HTB-Walkthrough
- rohit-sundar/cve-2026-23744
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-23744?
- CVE-2026-23744 is a critical-severity vulnerability in Mcpjam Inspector, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-01-16.
- How severe is CVE-2026-23744?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-23744 known to be exploited?
- 36 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.