Bug 2480689 (CVE-2026-46595)

Summary:	CVE-2026-46595 golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aazores, akoudelk, alcohan, amctagga, anjoseph, aoconnor, bbrownin, bdettelb, bniver, cmah, cnewsom, crizzo, dakwon, dhanak, dkeler, doconnor, drosa, dsimansk, dymurray, eaguilar, ebaron, eborisov, eglynn, fdeutsch, flucifre, gmeno, gparvin, groman, jaharrin, jbalunas, jburrell, jeder, jjoyce, jkoehler, jmatthew, jolong, jprabhak, jpretori, jschluet, kingland, kverlaen, lball, lbragsta, lgamliel, lhh, lphiri, manissin, mbenjamin, mburns, mgarciac, mhackett, mhess, mnovotny, ngough, oramraz, pahickey, pjindal, rekumar, rfreiman, rhaigner, rhel-process-autobot, rjohnson, sausingh, sbratsla, sdawley, smullick, sostapov, stirabos, suppawar, thason, vereddy, veshanka, vkarehfa, vle, vvoronko, vwilson, watson-tool-maintainers, wenshen, whayutin, wtam, xiyuan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in golang.org/x/crypto/ssh. Source-address validation can be skipped when an SSH server configuration uses an authentication callback type other than public key, allowing authorization bypass in misconfigured servers. This is a follow-on to incomplete coverage from the CVE-2024-45337 fix.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2487630
Bug Blocks:

Description OSIDB Bzimport 2026-05-22 04:02:14 UTC

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.

Comment 2 errata-xmlrpc 2026-07-08 15:51:19 UTC

This issue has been addressed in the following products:

  RHEM 1.0 for RHEL 9

Via RHSA-2026:36796 https://access.redhat.com/errata/RHSA-2026:36796