CVE-2025-23166 allows attackers to crash Node.js processes via malformed crypto inputs; upgrade immediately to 20.19.2+, 22.15.1+, 23.11.1+, or 24.0.2+.
July 7, 2026
Summary
Untrusted cryptographic operations are standard in production apps; a single malicious input can take down your entire runtime. HTTP/1 request smuggling (20.x only) also bypasses proxy-based access controls, exposing backend services.
Why it matters
Untrusted cryptographic operations are standard in production apps; a single malicious input can take down your entire runtime. HTTP/1 request smuggling (20.x only) also bypasses proxy-based access controls, exposing backend services.
Implementation verdict
Replace your current Node.js version with the patched release for your line (20.x, 22.x, 23.x, or 24.x). No code changes required. Do this today—the high-severity crash vector affects all active release lines in production.
Sources
Dev Signal
Get briefs like this in your inbox — free, every weekday.
100+ sources compressed into one 4-minute read. Ranked, cited, implementation-ready.