Mozilla'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().
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Affected Vendors & Products
References
History
Fri, 09 Oct 2026 08:00:00 +0000
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| First Time appeared |
Mozilla
Mozilla convict |
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| Vendors & Products |
Mozilla
Mozilla convict |
Wed, 07 Oct 2026 19:45:00 +0000
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|---|---|---|
| References |
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Wed, 07 Oct 2026 17:30:00 +0000
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| Metrics |
ssvc
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Wed, 07 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-1321 CWE-400 |
Wed, 07 Oct 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-1136 |
Wed, 07 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-915 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Wed, 07 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-1136 |
Tue, 06 Oct 2026 20:30:00 +0000
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| Description | Mozilla'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(). | |
| Title | CVE-2026-106550 | |
| References |
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Status: PUBLISHED
Assigner: certcc
Published: 2026-10-06T20:09:55.919Z
Updated: 2026-10-07T19:33:03.505Z
Reserved: 2026-10-06T20:07:46.075Z
Link: CVE-2026-106550
Updated: 2026-10-07T15:05:07.527Z
Status : Deferred
Published: 2026-10-06T21:17:18.810
Modified: 2026-10-07T20:17:10.790
Link: CVE-2026-106550