What is GHSA-q4h4-gmj2-qvw2?

GHSA-q4h4-gmj2-qvw2 is a security advisory published by GitHub Security Advisories with High severity. golang.org/x/crypto/ssh: Invoking byte arithmetic causes underflow and panic

Which CVE IDs does GHSA-q4h4-gmj2-qvw2 cover?

GHSA-q4h4-gmj2-qvw2 covers the following CVE IDs: CVE-2026-46597. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-q4h4-gmj2-qvw2?

GHSA-q4h4-gmj2-qvw2 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

Which products are affected by GHSA-q4h4-gmj2-qvw2?

GHSA-q4h4-gmj2-qvw2 affects 1 product, including: go/golang.org/x/crypto/ssh:\u003c 0.52.0.

GHSA-q4h4-gmj2-qvw2HighCVSS 7.5

golang.org/x/crypto/ssh: Invoking byte arithmetic causes underflow and panic

Vendor

GitHub Security Advisories

Published

June 25, 2026

Last Modified

June 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-46597 →

📋 Description

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

🎯 Affected products1

go/golang.org/x/crypto/ssh:< 0.52.0

🔗 References (6)

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