Gin Quin · Fast-Toml · CVE-2021-48012
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.