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panavenue merged 1 commit into from
Oct 16, 2025
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docs: add warning message regarding to incompatible go version #2496

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8 changes: 8 additions & 0 deletions README.md
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[![CI][ci-badge]][ci-build]

> [!WARNING]
> **Go versions 1.25.2 and 1.24.8 are NOT compatible with Cloud Auth Proxy.**
>
> An update to the Go version 1.25.2 and Go 1.24.8 breaks SAN verificaton. This is because Cloud SQL includes a trailing dot in the DNS name within the certificate's Subject Alternative Name (SAN), which the above Go versions reject as a malformed DNS name.
>
> For more details, please see the related Go issue: [crypto/x509: quadratic complexity when checking name constraints ](https://github.com/golang/go/issues/75715).


> [!IMPORTANT]
>
> The Cloud SQL Auth Proxy does not currently support Unix domain socket
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