CVE-2026-106550: Mozilla Node-convict, инжекция

Описание

Оригинално описание

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().

Засегнати продукти

• Mozilla Node-convict: 6.2.2

Вид слабост

• CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
• CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes
• CWE-400 Неконтролирано потребление на ресурси

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-106550
• https://nvd.nist.gov/vuln/detail/CVE-2026-106550
• https://github.com/mozilla/node-convict
• https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md