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CVE-2026-106550

Quick assessment

Affected
Mozilla Node-convict
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla 的 Node-convict（版本 6.2.2 及更高版本）存在一个拒绝服务（DoS）漏洞，该漏洞源于 config.set() 函数中对原型污染（prototype pollution）的防护不完整。攻击者若能控制配置键名，便可以向 constructor.<key> 写入任意属性，而 walk() 函数会将此类键解析为全局 Object 函数。这将允许攻击者覆盖诸如 Object.assign 等核心 JavaScript 方法，从而导致进程范围内持续性的失败，并需重启进程才能恢复。 该漏洞绕过

AI Predicted 7.5 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process
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I. Basic Information for CVE-2026-106550

Vulnerability Information
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Vulnerability Title
CVE-2026-106550
Source: CVE Program / CVE List V5
Vulnerability 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().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mozilla Node-convict 6.2.2 -

II. Public POCs for CVE-2026-106550

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III. Intelligence Information for CVE-2026-106550

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Vendor Pages for CVE-2026-106550 (1)

IV. Related Vulnerabilities

Same vendor: Mozilla

V. Comments for CVE-2026-106550

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