CVE-2026-42504

A flaw was found in the Golang MIME Multipurpose Internet Mail Extensions package. A remote attacker could exploit this vulnerability by sending a maliciously-crafted MIME header containing many invalid encoded-words. This could lead to excessive CPU consumption, resulting in a Denial of Service...

Amazon Linux 2023 : golang-github-burntsushi-toml, golang-github-burntsushi-toml-devel (ALAS2023-2026-1877)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1877 advisory. x509.Certificate.VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name SAN entries. This caused strings.Splithost, . to execute repeatedly on the same...

CLEANSTART-2026-BM78291 Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU

Multiple security vulnerabilities affect the dex package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU. See references for individual vulnerability details...

CLEANSTART-2026-SQ76279 Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU

Multiple security vulnerabilities affect the dex package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU. See references for individual vulnerability details...

CLEANSTART-2026-KN74022 Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU

Security vulnerability affects the local-static-provisioner-fips package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CLEANSTART-2026-KV53168 Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU

Security vulnerability affects the kyverno-policy-reporter-kyverno-plugin package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CLEANSTART-2026-CP20786 Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU

Multiple security vulnerabilities affect the nats-streaming package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU. See references for individual vulnerability details...

BIT-GOLANG-2026-42504 Quadratic complexity in WordDecoder.DecodeHeader in mime

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header

A flaw was found in the Golang MIME Multipurpose Internet Mail Extensions package. A remote attacker could exploit this vulnerability by sending a maliciously-crafted MIME header containing many invalid encoded-words. This could lead to excessive CPU consumption, resulting in a Denial of Service...

mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header

A flaw was found in the Golang MIME Multipurpose Internet Mail Extensions package. A remote attacker could exploit this vulnerability by sending a maliciously-crafted MIME header containing many invalid encoded-words. This could lead to excessive CPU consumption, resulting in a Denial of Service...

SUSE CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

EUVD-2026-34039

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

DEBIAN-CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504 Quadratic complexity in WordDecoder.DecodeHeader in mime

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504 Quadratic complexity in WordDecoder.DecodeHeader in mime

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU...

CVE-2026-42504

CVE-2026-42504 affects the WordDecoder.DecodeHeader function in the mime package, where decoding a malicious MIME header with many invalid encoded-words leads to quadratic time complexity and potential high CPU usage. Public descriptions identify the root cause as quadratic complexity in that dec...