CVE-2026-5833 is a medium-severity (CVSS 5.3) CWE-74 vulnerability in mcp-server-taskwarrior. No vendor fix is recorded yet; mitigation options are listed below.
awwaiid mcp-server-taskwarrior vulnerable to command injection
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-5833.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-5833 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
mcp-server-taskwarriornpmDescription
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | mcp-server-taskwarrior | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mcp-server-taskwarrior, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of mcp-server-taskwarrior has shipped for CVE-2026-5833 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-5833 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-5833. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-5833 in your dependencies?
O3 Security finds CVE-2026-5833 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.