CVE-2026-39835

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
References
Link Resource
https://go.dev/cl/781660 Issue Tracking
https://go.dev/issue/79563 Issue Tracking
https://groups.google.com/g/golang-announce/c/a082jnz-LvI Mailing List
https://pkg.go.dev/vuln/GO-2026-5015 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:26546
https://access.redhat.com/errata/RHSA-2026:26547
https://access.redhat.com/errata/RHSA-2026:36199
https://access.redhat.com/errata/RHSA-2026:36207
https://access.redhat.com/errata/RHSA-2026:36319
https://access.redhat.com/errata/RHSA-2026:36625
https://access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:36651
https://access.redhat.com/errata/RHSA-2026:36796
https://access.redhat.com/errata/RHSA-2026:36797
https://access.redhat.com/errata/RHSA-2026:37072
https://access.redhat.com/errata/RHSA-2026:37123
https://access.redhat.com/errata/RHSA-2026:37268
https://access.redhat.com/errata/RHSA-2026:37271
https://access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:37286
https://access.redhat.com/errata/RHSA-2026:37296
https://access.redhat.com/errata/RHSA-2026:37387
https://access.redhat.com/errata/RHSA-2026:37410
https://access.redhat.com/errata/RHSA-2026:38504
https://access.redhat.com/errata/RHSA-2026:40118
https://access.redhat.com/errata/RHSA-2026:40262
https://access.redhat.com/errata/RHSA-2026:40945
https://access.redhat.com/errata/RHSA-2026:40969
https://access.redhat.com/errata/RHSA-2026:40972
https://access.redhat.com/errata/RHSA-2026:40974
https://access.redhat.com/errata/RHSA-2026:41019
https://access.redhat.com/errata/RHSA-2026:41031
https://access.redhat.com/errata/RHSA-2026:41036
https://access.redhat.com/errata/RHSA-2026:41066
https://access.redhat.com/errata/RHSA-2026:42146
https://access.redhat.com/security/cve/CVE-2026-39835
https://bugzilla.redhat.com/show_bug.cgi?id=2480680
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json
Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

History

21 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:42146 -

17 Jul 2026, 13:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40945 -
  • () https://access.redhat.com/errata/RHSA-2026:40972 -
  • () https://access.redhat.com/errata/RHSA-2026:41019 -
  • () https://access.redhat.com/errata/RHSA-2026:41031 -
  • () https://access.redhat.com/errata/RHSA-2026:41036 -
  • () https://access.redhat.com/errata/RHSA-2026:41066 -

16 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40118 -
  • () https://access.redhat.com/errata/RHSA-2026:40262 -
  • () https://access.redhat.com/errata/RHSA-2026:40969 -
  • () https://access.redhat.com/errata/RHSA-2026:40974 -

13 Jul 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:38504 -

10 Jul 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37272 -
  • () https://access.redhat.com/errata/RHSA-2026:37286 -
  • () https://access.redhat.com/errata/RHSA-2026:37296 -
  • () https://access.redhat.com/errata/RHSA-2026:37387 -
  • () https://access.redhat.com/errata/RHSA-2026:37410 -

09 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:36651 -
  • () https://access.redhat.com/errata/RHSA-2026:36796 -
  • () https://access.redhat.com/errata/RHSA-2026:36797 -
  • () https://access.redhat.com/errata/RHSA-2026:37072 -
  • () https://access.redhat.com/errata/RHSA-2026:37123 -
  • () https://access.redhat.com/errata/RHSA-2026:37268 -
  • () https://access.redhat.com/errata/RHSA-2026:37271 -

08 Jul 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:36199 -
  • () https://access.redhat.com/errata/RHSA-2026:36207 -
  • () https://access.redhat.com/errata/RHSA-2026:36319 -
  • () https://access.redhat.com/errata/RHSA-2026:36625 -
  • () https://access.redhat.com/errata/RHSA-2026:36648 -

01 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:26546 -
  • () https://access.redhat.com/errata/RHSA-2026:26547 -

30 Jun 2026, 03:19

Type Values Removed Values Added
References
  • () https://access.redhat.com/security/cve/CVE-2026-39835 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2480680 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json -
CWE CWE-476

28 May 2026, 14:56

Type Values Removed Values Added
CWE CWE-295
References () https://go.dev/cl/781660 - () https://go.dev/cl/781660 - Issue Tracking
References () https://go.dev/issue/79563 - () https://go.dev/issue/79563 - Issue Tracking
References () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - Mailing List
References () https://pkg.go.dev/vuln/GO-2026-5015 - () https://pkg.go.dev/vuln/GO-2026-5015 - Vendor Advisory
CPE cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*
First Time Golang crypto
Golang

22 May 2026, 18:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.3

22 May 2026, 04:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-05-22 04:16

Updated : 2026-07-21 12:18


NVD link : CVE-2026-39835

Mitre link : CVE-2026-39835

CVE.ORG link : CVE-2026-39835


JSON object : View

Products Affected

golang

  • crypto
CWE
CWE-295

Improper Certificate Validation

CWE-476

NULL Pointer Dereference