HIGH7.5

GO-2025-4006

Excessive CPU consumption in ParseAddress in net/mail

Quick fix

GO-2025-4006 — stdlib: upgrade to the fixed version with the command below.

go get stdlib@v1.24.8

Details

The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.

Are you affected?

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Affected packages

Go/stdlib

Introduced in: 0Fixed in: 1.24.8

Fixgo get stdlib@v1.24.8

References

https://go.dev/cl/709860[FIX]
https://go.dev/issue/75680[REPORT]
https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI[WEB]