CVE-2026-42504
highpriority · track · 0EPSS 0.006 · 46 %ileCHDEEUFRRUUSEPSS · scored 2026-10-27
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No fix is available; mitigate or reduce exposure.
- No fix availableLabX Standardmettler_toledo_psirt
This vulnerability will be fixed in the upcoming releases
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (27)
Products and version ranges known to be affected.
- Red Hat Enterprise Linux Advanced Cluster Management for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:advanced_cluster_management_for_kubernetes
- Red Hat Enterprise Linux Multicluster Engine for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:multicluster_engine_for_kubernetes
- Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
advisories (6)
Vendor and ecosystem advisories describing this.
- VDE-2026-088METTLER TOLEDO: LabX Standard and Enterprise Report on External Component Analysis - v21.42026-08-20csaf · mettler_toledo_psirtCH
The vulnerabilities found in LabX Standard versions 21.3.22 - 21.4.23 are CVE-2025-69419, CVE-2026-0915, CVE-2025-15467, CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Standard v21.4.25. The vulnerabilities found in LabX Enterprise versions 21.3.22 - 21.4.23 are CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Enterprise v21.4.25 All other vulnerabilities are to be fixed in the upcoming releases.
- WID-SEC-W-2026-1776Golang Go: Mehrere SchwachstellenDeutsch2026-06-02csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, um einen Denial of Service durchzuführen, und um falsche Informationen darzustellen.
- BIT-golang-2026-42504Quadratic complexity in WordDecoder.DecodeHeader in mime2026-06-05vendor · osvUS
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- GO-2026-5038Quadratic complexity in WordDecoder.DecodeHeader in mime2026-06-02vendor · osvUS
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
also known as (6)
Other names and identifiers for this entity.
- CNNVD-202606-375cnnvd
- EUVD-2026-34039enisa_euvd
- BDU:2026-09276fstec_bdu
- GHSA-h524-452v-82p9enisa_euvd
- BIT-golang-2026-42504osv
- GO-2026-5038osv
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://go.dev/cl/774481cnnvd
- https://go.dev/issue/79217cnnvd
- https://groups.google.com/g/golang-announce/c/tKs3rmcBcKwcnnvd
- https://pkg.go.dev/vuln/GO-2026-5038cnnvd
- https://go.dev/cl/774481enisa_euvd
- https://go.dev/issue/79217enisa_euvd
- https://groups.google.com/g/golang-announce/c/tKs3rmcBcKwenisa_euvd
- https://pkg.go.dev/vuln/GO-2026-5038enisa_euvd
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