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

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-46597
StatePUBLISHED
AssignerGo
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-22 04:16:26 UTC
Updated2026-05-28 14:44:17 UTC
DescriptionAn incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000420000 probability, percentile 0.128120000 (date 2026-05-27)

Problem Types: CWE-704 | CWE-191: Integer Underflow (Wrap or Wraparound)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Golang Crypto All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Golang.orgxcrypto Golang.org/x/crypto/ssh affected 0.52.0 semver Not specified

References

ReferenceSourceLinkTags
groups.google.com/g/golang-announce/c/a082jnz-LvI [email protected] groups.google.com Mailing List
go.dev/cl/781620 [email protected] go.dev Issue Tracking
pkg.go.dev/vuln/GO-2026-5013 [email protected] pkg.go.dev Vendor Advisory
go.dev/issue/79561 [email protected] go.dev Issue Tracking
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Maciej Kawka (en)

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