Denial of Service Vulnerability in Go's Crypto/X509 and Crypto/TLS

CVE-2026-32280

What is CVE-2026-32280?

A flaw in the Go programming language's crypto/x509 and crypto/tls libraries allows for denial of service during chain building processes. This issue arises when an excessive number of intermediate certificates are supplied, leading to insufficient work limitation in VerifyOptions.Intermediates. This could impact users relying on these libraries for secure communications, exposing them to significant downtimes.

References