Which versions of @feathersjs/mongodb are affected by CVE-2026-29793?

@feathersjs/mongodb (npm) versions >= 5.0.0, <= 5.0.41 is affected.

Is there a fix for CVE-2026-29793?

Yes. CVE-2026-29793 is fixed in 5.0.42. Upgrade to this version or later.

Is CVE-2026-29793 exploitable, and should I be worried?

Whether CVE-2026-29793 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2026-29793 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2026-29793 in @feathersjs/mongodb

Q: What is CVE-2026-29793?

CVE-2026-29793 is a critical-severity security vulnerability in @feathersjs/mongodb (npm), affecting versions >= 5.0.0, <= 5.0.41. It is fixed in 5.0.42.

Q: Is there a fix for CVE-2026-29793?

Yes. CVE-2026-29793 is fixed in 5.0.42. Upgrade to this version or later.

Q: Is CVE-2026-29793 exploitable, and should I be worried?

Whether CVE-2026-29793 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2026-29793 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2026-29793?

Upgrade @feathersjs/mongodb to 5.0.42 or later.

CVE-2026-29793

CVE-2026-29793 is a critical-severity security vulnerability in @feathersjs/mongodb (npm), affecting versions >= 5.0.0, <= 5.0.41. It is fixed in 5.0.42.

Does this CVE actually affect you?

Kodem shows which CVEs are reachable and running in your applications, so you fix what's exploitable, not just what's listed.

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Runtime intelligence, not another scanner.

Summary

Feathers has a NoSQL Injection via WebSocket id Parameter in MongoDB Adapter

Socket.IO clients can send arbitrary JavaScript objects as the id argument to any service method (get, patch, update, remove). The transport layer performs no type checking on this argument. When the service uses the MongoDB adapter, these objects pass through getObjectId() and land directly in the MongoDB query as operators. Sending {$ne: null} as the id matches every document in the collection.

Impact

Affected versions

@feathersjs/mongodb (>= 5.0.0, <= 5.0.41)

Security releases

@feathersjs/mongodb → 5.0.42 (npm)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade @feathersjs/mongodb to 5.0.42 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2026-29793? CVE-2026-29793 is a critical-severity security vulnerability in @feathersjs/mongodb (npm), affecting versions >= 5.0.0, <= 5.0.41. It is fixed in 5.0.42.
Which versions of @feathersjs/mongodb are affected by CVE-2026-29793? @feathersjs/mongodb (npm) versions >= 5.0.0, <= 5.0.41 is affected.
Is there a fix for CVE-2026-29793? Yes. CVE-2026-29793 is fixed in 5.0.42. Upgrade to this version or later.
Is CVE-2026-29793 exploitable, and should I be worried? Whether CVE-2026-29793 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2026-29793 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2026-29793? Upgrade @feathersjs/mongodb to 5.0.42 or later.