CVE-2026-39835

Description

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

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json

https://pkg.go.dev/vuln/GO-2026-5015

https://groups.google.com/g/golang-announce/c/a082jnz-LvI

https://go.dev/issue/79563

https://go.dev/cl/781660

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31393

https://bugzilla.redhat.com/show_bug.cgi?id=2480680

https://access.redhat.com/security/cve/CVE-2026-39835

https://access.redhat.com/errata/RHSA-2026:66521

https://access.redhat.com/errata/RHSA-2026:66022

https://access.redhat.com/errata/RHSA-2026:65126

https://access.redhat.com/errata/RHSA-2026:62260

https://access.redhat.com/errata/RHSA-2026:60520

https://access.redhat.com/errata/RHSA-2026:59593

https://access.redhat.com/errata/RHSA-2026:59467

https://access.redhat.com/errata/RHSA-2026:57194

https://access.redhat.com/errata/RHSA-2026:54525

https://access.redhat.com/errata/RHSA-2026:52910

https://access.redhat.com/errata/RHSA-2026:52857

https://access.redhat.com/errata/RHSA-2026:51038

https://access.redhat.com/errata/RHSA-2026:51036

https://access.redhat.com/errata/RHSA-2026:51033

https://access.redhat.com/errata/RHSA-2026:48151

https://access.redhat.com/errata/RHSA-2026:47949

https://access.redhat.com/errata/RHSA-2026:47735

https://access.redhat.com/errata/RHSA-2026:46885

https://access.redhat.com/errata/RHSA-2026:43692

https://access.redhat.com/errata/RHSA-2026:43052

https://access.redhat.com/errata/RHSA-2026:42796

https://access.redhat.com/errata/RHSA-2026:42146

https://access.redhat.com/errata/RHSA-2026:41066

https://access.redhat.com/errata/RHSA-2026:41036

https://access.redhat.com/errata/RHSA-2026:41031

https://access.redhat.com/errata/RHSA-2026:41019

https://access.redhat.com/errata/RHSA-2026:40974

https://access.redhat.com/errata/RHSA-2026:40972

https://access.redhat.com/errata/RHSA-2026:40969

https://access.redhat.com/errata/RHSA-2026:40945

https://access.redhat.com/errata/RHSA-2026:40262

https://access.redhat.com/errata/RHSA-2026:40118

https://access.redhat.com/errata/RHSA-2026:38504

https://access.redhat.com/errata/RHSA-2026:37410

https://access.redhat.com/errata/RHSA-2026:37387

https://access.redhat.com/errata/RHSA-2026:37296

https://access.redhat.com/errata/RHSA-2026:37286

https://access.redhat.com/errata/RHSA-2026:37272

https://access.redhat.com/errata/RHSA-2026:37271

https://access.redhat.com/errata/RHSA-2026:37268

https://access.redhat.com/errata/RHSA-2026:37123

https://access.redhat.com/errata/RHSA-2026:37072

https://access.redhat.com/errata/RHSA-2026:36797

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

https://access.redhat.com/errata/RHSA-2026:36651

https://access.redhat.com/errata/RHSA-2026:36648

https://access.redhat.com/errata/RHSA-2026:36625

https://access.redhat.com/errata/RHSA-2026:36319

https://access.redhat.com/errata/RHSA-2026:36207

https://access.redhat.com/errata/RHSA-2026:36199

https://access.redhat.com/errata/RHSA-2026:26547

https://access.redhat.com/errata/RHSA-2026:26546

Details

Source: Mitre, NVD

Named Vulnerability: GO-2026-5015Named Vulnerability: GHSA-78mq-xcr3-xm33

Risk Information

CVSS v2

CVSS v3

EPSS