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Red Hat Security Advisory

RHSA-2026:9874

nodejs:20 security update

Released 2026-04-22 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 4 records

Priority MEDIUM 60

A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`.

CVSS 3.0HIGH 7.5 Network No auth No interaction EPSS 0.25443 Published 2026-03-30 Fixed CWE-770