PT-2026-45874 · Go Standard Library+1 · Mime+1

P4P3R · Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-42504

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions The product name cannot be determined (affected versions not specified)

Description Decoding a maliciously-crafted MIME header containing many invalid encoded-words can lead to excessive CPU consumption.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-42504

GO-2026-5038

Affected Products

Mime

Stdlib

References · 6

• https://osv.dev/vulnerability/GO-2026-5038 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42504 · Security Note
• https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw · Note
• https://go.dev/cl/774481 · Note
• https://pkg.go.dev/vuln/GO-2026-5038 · Note
• https://go.dev/issue/79217 · Note