CVE-2026-46595

Description

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
golang-go.crypto	26.04 LTS resolute	Fixed 1:0.47.0-1ubuntu0.1~esm1
	25.10 questing	Vulnerable
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
lxd	26.04 LTS resolute	Not in release
	25.10 questing	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
google-guest-agent	26.04 LTS resolute	Vulnerable
	25.10 questing	Vulnerable
	24.04 LTS noble	Vulnerable
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
snapd	26.04 LTS resolute	Needs evaluation
	25.10 questing	Needs evaluation
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

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Notes

jdstrand

snapd contains an embedded copy of golang-go.crypto lxd in 18.04 LTS and earlier contains an embedded copy of golang-go.crypto

hlibk

google-guest-agent contains an embedded copy of golang-go.crypto On noble and below, this CVE does not affect the package as VerifiedPublicKeyCallback has not been introduced at that time. The remaining case is covered by CVE-2024-45337.

shishir

VerifiedPublicKeyCallback feature only added on 0.43

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
golang-go.crypto	Upstream: 533fb3f

Severity score breakdown

CVSS version: CVSS v3.0

Base score 10.0 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Changed
Confidentiality impact	High
Integrity impact	High
Availability impact	Low

Scores

Parameter	Value
Base score	10.0 · Critical
Exploitability score	-
Impact score	-

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