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GO-2026-5689

Mailpit: Concurrent map read & write in proxy CSS rewriter - remote unauth crash (fatal error: concurrent map read and map write) in github.com/axllent/mailpit

Quick fix

GO-2026-5689 — github.com/axllent/mailpit: upgrade to the fixed version with the command below.

go get github.com/axllent/mailpit@v1.30.0

Details

Mailpit: Concurrent map read & write in proxy CSS rewriter - remote unauth crash (fatal error: concurrent map read and map write) in github.com/axllent/mailpit

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/axllent/mailpit

Introduced in: 0Fixed in: 1.30.0

Fixgo get github.com/axllent/mailpit@v1.30.0

References

https://github.com/axllent/mailpit/security/advisories/GHSA-w4vj-r5pg-3722[ADVISORY]
https://github.com/axllent/mailpit/releases/tag/v1.30.0[WEB]