CVE-2026-5833 awwaiid mcp-server-taskwarrior index.ts server.setRequestHandler command injection
A local attacker can execute arbitrary commands via the server.setRequestHandler function in the mcp-server-taskwarrior 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-2026-5833?
CVE-2026-5833 is a medium-severity command injection vulnerability in awwaiid mcp-server-taskwarrior, published on 9 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security vulnerability has been detected in awwaiid mcp-server-taskwarrior up to 1.0.1. This impacts the function server.setRequestHandler of the file index.ts. Such manipulation of the argument Identifier leads to command injection. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The name of the patch is 1ee3d282debfa0a99afeb41d22c4b2fd5a3148f2. Applying a patch is advised to resolve 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-2026-5833?
2 open source packages ship an affected version, including mcp-server-taskwarrior.
| Package | Affected | Fixed in |
|---|---|---|
mcp-server-taskwarrior npm | All versions to 1.0.1 | None |
mcp-server-taskwarrior npm | All versions to 1.0.1 | None |
How do I fix CVE-2026-5833?
No fix has been published for CVE-2026-5833 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-2026-5833 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5833 exists.
Sources
Also known as GHSA-95hg-3c55-xf9x.