CVE-2026-5802 idachev mcp-javadc HTTP os command injection
Remote attackers can execute arbitrary OS commands via the jarFilePath argument in the mcp-javadc HTTP interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5802?
CVE-2026-5802 is a medium-severity command injection vulnerability in idachev mcp-javadc, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2026-5802?
How do I fix CVE-2026-5802?
No fix has been published for CVE-2026-5802 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-5802 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5802 exists.
Sources
Also known as GHSA-r8rp-hx65-58jj.