CVE-2026-106550

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-106550
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 21:17:18 UTC
Updated2026-10-06 21:17:18 UTC
DescriptionMozilla's Node-convict (version 6.2.2 and later) is vulnerable to a Denial of Service vulnerability caused by incomplete prototype‑pollution protections in config.set(). An attacker controlling the configuration key can write arbitrary properties to constructor.<key>, which walk() resolves to the global Object function. This allows overwriting core JavaScript methods such as Object.assign, leading to persistent process-wide failures and requiring a restart. The issue bypasses existing filters that only block constructor.prototype.* and __proto__.*. Exploitation requires an endpoint that forwards attacker-controlled keys into config.set().

Risk And Classification

Problem Types: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (‘Prototype Pollution’) | CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes | CWE-400: Uncontrolled Resource Consumption (‘Denial of Service’)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mozilla Node-convict affected 6.2.2 Not specified

References

ReferenceSourceLinkTags
github.com/mozilla/node-convict [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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