Quadratic complexity in WordDecoder.DecodeHeader in mime
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
OpenShift Container Platform 4.18.54 packages and security update
Released 2026-08-26 · Red Hat rating Important · View on Red Hat →
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service.
url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries.