What is CVE-2026-46597?

CVE-2026-46597 is a high-severity vulnerability in Golang Crypto, classified under Incorrect Type Conversion or Cast. CVSS score: 7.5/10. Published 2026-05-22.

How severe is CVE-2026-46597?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Golang Crypto

CVE-2026-46597

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

Published 2026-05-22 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.6th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Golang Crypto
Golang.org/x/crypto Golang.org/x/crypto/ssh — versions 0

Weakness classification (CWE)

CWE-704 — Incorrect Type Conversion or Cast

References

go.dev/issue/79561 (Issue Tracking)
groups.google.com/g/golang-announce/c/a082jnz-LvI (Mailing List)
go.dev/cl/781620 (Issue Tracking)
pkg.go.dev/vuln/GO-2026-5013 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-46597?: CVE-2026-46597 is a high-severity vulnerability in Golang Crypto, classified under Incorrect Type Conversion or Cast. CVSS score: 7.5/10. Published 2026-05-22.
How severe is CVE-2026-46597?: High severity. CVSS v3 base score is 7.5 out of 10.