CVE-2026-42504

NONECVSS 0.0

0.0

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

CVSS v3: —
EG Score: 0.0(none)
EPSS: —
KEV: Not listed

Published

June 2, 2026

Last Modified

June 2, 2026

References (4)

security@golanghttps://go.dev/cl/774481
security@golanghttps://go.dev/issue/79217
security@golanghttps://groups.google.com/g/golang-announce/c/tKs3rmcBcKw
security@golanghttps://pkg.go.dev/vuln/GO-2026-5038

Vendor Advisories for CVE-2026-42504(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-h524-452v-82p9
GitHub Security Advisoriesunknown
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume...

Data Freshness Timeline

(refreshed 1× in last 7d / 1× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 22:30 UTCEG score recompute

Frequently asked(3)

What is CVE-2026-42504?

CVE-2026-42504 is a none vulnerability published on June 2, 2026. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

When was CVE-2026-42504 disclosed?

CVE-2026-42504 was first published in the National Vulnerability Database on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

How do I remediate CVE-2026-42504?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42504, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-42504

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CVE-2026-42504

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2026-42504(1)