Uncaught Exception Affecting github.com/golang/crypto/ssh package, versions <0.52.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMGOLANGCRYPTOSSH-16796333
- published22 May 2026
- disclosed22 May 2026
- creditNCC Group Cryptography Services
Introduced: 22 May 2026
CVE-2026-39835 (opens in a new tab)How to fix?
Upgrade github.com/golang/crypto/ssh to version 0.52.0 or higher.
Overview
github.com/golang/crypto/ssh is a SSH client and server
Affected versions of this package are vulnerable to Uncaught Exception in the CertChecker component when used as a public key callback without setting IsUserAuthority or IsHostAuthority. An attacker can cause the server to panic by presenting a crafted certificate.
Note:
This is only exploitable if both IsUserAuthority and IsHostAuthority are not set in the server configuration.