CVE•Published 2026-10-12•Modified 2026-10-26•1 article on news•3 live references•NVD data
CVE-2021-48012
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
EPSS percentile
35
Exploit Prediction Scoring System · top 65% of all CVEs
Description
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.
Timeline
Published 2026-10-12
Modified 2026-10-26
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2021-48012Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-48012Censys host search filtered to this CVE id.
grep.app
CVE-2021-48012Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-48012GitHub code search for direct mentions.
Google dork
"CVE-2021-48012" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.