GHSA-78mq-xcr3-xm33
golang.org/x/crypto is vulnerable to invoking server panic during CheckHostKey/Authenticate flow
At a glance
- Published
- Updated
- CVE
- CVE-2026-39835
- Aliases
- GO-2026-5015
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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.
Affected packages
| Package | Versions |
|---|---|
| Go · golang.org/x/crypto | introduced 0, fixed 0.52.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-39835 ADVISORY
- https://access.redhat.com/errata/RHSA-2026:26546 WEB
- https://access.redhat.com/errata/RHSA-2026:42796 WEB
- https://access.redhat.com/errata/RHSA-2026:43052 WEB
- https://access.redhat.com/errata/RHSA-2026:43692 WEB
- https://access.redhat.com/errata/RHSA-2026:46885 WEB
- https://access.redhat.com/errata/RHSA-2026:47735 WEB
- https://access.redhat.com/errata/RHSA-2026:47949 WEB
- https://access.redhat.com/errata/RHSA-2026:48151 WEB
- https://access.redhat.com/errata/RHSA-2026:51033 WEB
- https://access.redhat.com/errata/RHSA-2026:51036 WEB
- https://access.redhat.com/errata/RHSA-2026:51038 WEB
- https://access.redhat.com/errata/RHSA-2026:52857 WEB
- https://access.redhat.com/errata/RHSA-2026:52910 WEB
- https://access.redhat.com/errata/RHSA-2026:54525 WEB
- https://access.redhat.com/errata/RHSA-2026:57194 WEB
- https://access.redhat.com/errata/RHSA-2026:59467 WEB
- https://access.redhat.com/errata/RHSA-2026:59593 WEB
- https://access.redhat.com/errata/RHSA-2026:60520 WEB
- https://access.redhat.com/errata/RHSA-2026:62260 WEB
- https://access.redhat.com/errata/RHSA-2026:65126 WEB
- https://access.redhat.com/errata/RHSA-2026:66022 WEB
- https://access.redhat.com/errata/RHSA-2026:66521 WEB
- https://access.redhat.com/security/cve/CVE-2026-39835 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2480680 WEB
- https://cs.opensource.google/go/x/crypto PACKAGE
- https://go.dev/cl/781660 WEB
- https://go.dev/issue/79563 WEB
- https://groups.google.com/g/golang-announce/c/a082jnz-LvI WEB
- https://pkg.go.dev/vuln/GO-2026-5015 WEB
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json WEB
- https://access.redhat.com/errata/RHSA-2026:26547 WEB
- https://access.redhat.com/errata/RHSA-2026:36199 WEB
- https://access.redhat.com/errata/RHSA-2026:36207 WEB
- https://access.redhat.com/errata/RHSA-2026:36319 WEB
- https://access.redhat.com/errata/RHSA-2026:36625 WEB
- https://access.redhat.com/errata/RHSA-2026:36648 WEB
- https://access.redhat.com/errata/RHSA-2026:36651 WEB
- https://access.redhat.com/errata/RHSA-2026:36796 WEB
- https://access.redhat.com/errata/RHSA-2026:36797 WEB
- https://access.redhat.com/errata/RHSA-2026:37072 WEB
- https://access.redhat.com/errata/RHSA-2026:37123 WEB
- https://access.redhat.com/errata/RHSA-2026:37268 WEB
- https://access.redhat.com/errata/RHSA-2026:37271 WEB
- https://access.redhat.com/errata/RHSA-2026:37272 WEB
- https://access.redhat.com/errata/RHSA-2026:37286 WEB
- https://access.redhat.com/errata/RHSA-2026:37296 WEB
- https://access.redhat.com/errata/RHSA-2026:37387 WEB
- https://access.redhat.com/errata/RHSA-2026:37410 WEB
- https://access.redhat.com/errata/RHSA-2026:38504 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |