Vulnerability · Published Apr 8, 2026 · Assigned by VulDB

CVE-2026-5802idachev mcp-javadc HTTP os command injection

High 7.3

In plain English

A high-severity OS command injection in mcp-javadc from idachev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)1.9%top 20.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in idachev mcp-javadc up to 1.2.4. Impacted is an unknown function of the component HTTP Interface. Such manipulation of the argument jarFilePath leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
idachev	mcp-javadc	1.2.01.2.11.2.21.2.31.2.4

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-356241 | idachev mcp-javadc HTTP os command injection vdb-entry, technical-description
VDB-356241 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #786974 | idachev @idachev/mcp-javadc 1.2.4 Command Injection third-party-advisory
https://github.com/idachev/mcp-javadc/issues/7 issue-tracking
https://github.com/BruceJqs/public_exp/issues/2 exploit, issue-tracking
https://github.com/idachev/mcp-javadc/ product