Missing Critical Step in Authentication Affecting org.apache.sshd:sshd-core package, versions [,2.20.0)[3.0.0-M1,3.0.0-M6)
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.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHESSHD-21715429
- published26 Oct 2026
- disclosed30 Sept 2026
- creditAbhishek Kushwaha
Introduced: 30 Sep 2026
NewCVE-2026-93994 (opens in a new tab)How to fix?
Upgrade org.apache.sshd:sshd-core to version 2.20.0, 3.0.0-M6 or higher.
Overview
Affected versions of this package are vulnerable to Missing Critical Step in Authentication via the UserAuthPublicKey handler in sshd-core. An attacker with one authorized key can authenticate to a server configured to require publickey,publickey by presenting that same key twice, gaining an SSH session without satisfying the requirement for two distinct keys.