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Security Advisories

GO-2026-4986

https://pkg.go.dev/vuln/GO-2026-4986

Severity

7.5

High

CVSS V3

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Summary

Quadratic string concatentation in consumeComment in net/mail

Description

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

  • https://nvd.nist.gov/vuln/detail/CVE-2026-39820
  • https://github.com/advisories/GHSA-p9h5-jm8x-mjm5
  • https://pkg.go.dev/vuln/GO-2026-4986
  • https://go.dev/issue/78566
  • https://go.dev/cl/759940
  • https://groups.google.com/g/golang-announce/c/qcCIEXso47M

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