CVE-2026-5602 Nor2-io heim-mcp new_heim_application tools.ts registerTools os command injection
Local attackers can execute arbitrary OS commands via the registerTools function in the heim-mcp npm library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5602?
CVE-2026-5602 is a medium-severity command injection vulnerability in Nor2-io heim-mcp, published on 5 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was determined in Nor2-io heim-mcp up to 0.1.3. Impacted is the function registerTools of the file src/tools.ts of the component new_heim_application/deploy_heim_application/deploy_heim_application_to_cloud. This manipulation causes os command injection. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Patch name: c321d8af25f77668781e6ccb43a1336f9185df37. It is suggested to install a patch to address this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Which versions are affected by CVE-2026-5602?
2 open source packages ship an affected version, including @nor2/heim-mcp.
| Package | Affected | Fixed in |
|---|---|---|
@nor2/heim-mcp npm | All versions to 0.1.3 | None |
@nor2/heim-mcp npm | All versions to 0.1.3 | None |
How do I fix CVE-2026-5602?
No fix has been published for CVE-2026-5602 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-2026-5602 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5602 exists.
Sources
Also known as GHSA-wx4p-jr66-jfp9.