CVE-2026-46597: golang.org/x/crypto: Invoking byte arithmetic causes underflow and panic

June 25, 2026 (updated July 7, 2026)

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

References

github.com/advisories/GHSA-q4h4-gmj2-qvw2
go.dev/cl/781620
go.dev/issue/79561
groups.google.com/g/golang-announce/c/a082jnz-LvI
nvd.nist.gov/vuln/detail/CVE-2026-46597
pkg.go.dev/vuln/GO-2026-5013

Code Behaviors & Features

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