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CVE-2021-48012

fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML PUBLISHED

Description (CNA)

fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass.

Affected (CNA)

Vendor / productVersions
Gin-Quin / fast-tomlaffected 0 through 0.5.4

CWE

CWE-1321

References