BaselineWatch
Desk

CVE-2021-48012

8.8 high SSVC exploitation: none Deferred

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusReceived → DeferredNVD modified 2026-10-16 19:18
  2. First seenCVSS 8.8NVD modified 2026-10-12 21:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4