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InjectionWeakness · CWE-74

CVE-2026-5833

MEDIUM · 5.3 CVSS v3.1 Published 2026-04-09
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
55/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-74

Untrusted input crosses into a downstream interpreter — SQL, a shell, an HTML page, an LDAP query — without being kept separate from the commands around it, so the attacker's data is read as instructions. This is the parent class behind SQL injection, cross-site scripting, and command injection alike. The durable fix is the same everywhere: keep data and code apart at every boundary, using parameterisation or context-aware encoding rather than building interpreted strings by concatenation.

General guidance for the injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

Any version after 1.0.1 that includes commit 1ee3d282debfa0a99afeb41d22c4b2fd5a3148f2

  1. 1. Identify the current installed version of mcp-server-taskwarrior by checking package.json or using npm list awwaiid/mcp-server-taskwarrior
  2. 2. Clone or pull the latest version of the repository from https://github.com/awwaiid/mcp-server-taskwarrior
  3. 3. Review the fix in commit 1ee3d282debfa0a99afeb41d22c4b2fd5a3148f2 to understand the security changes made to index.ts
  4. 4. Ensure any user input to the Identifier argument in server.setRequestHandler is properly sanitized or parameterized to prevent command injection
  5. 5. Update dependencies and rebuild the project
  6. 6. Test the application to verify the fix works correctly

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-5833 in production — separate from our analysis above.

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