---
title: "CVE-2026-106550: Mozilla Node-convict - Denial of Service"
description: "Mozilla Node-convict >= 6.2.2 contains a denial of service caused by incomplete prototype-pollution protections in config.set(), letting attackers overwrite core JavaScript methods causing persistent process failures, exploit requires attacker-controlled keys forwarded to config.set()."
url: https://panop.io/threat-heartbeat/CVE-2026-106550/
---

# CVE-2026-106550 Mozilla Node-convict - Denial of Service

Mozilla Node-convict >= 6.2.2 contains a denial of service caused by incomplete prototype-pollution protections in config.set(), letting attackers overwrite core JavaScript methods causing persistent process failures, exploit requires attacker-controlled keys forwarded to config.set().

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.28% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-106550)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

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

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-400](https://cwe.mitre.org/data/definitions/400.html)

## Vendor fix

Update to the latest version with prototype-pollution protections fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-106550](https://nvd.nist.gov/vuln/detail/CVE-2026-106550)
- [https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md](https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md)
- [https://github.com/mozilla/node-convict](https://github.com/mozilla/node-convict)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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