Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck
CVE-2026-111638sshportal through 1.19.5 Missing Authorization in 'key show' Command Exposes Private Keys
High 7.7
In plain English
A high-severity missing authorization in sshportal from moul. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.4%top 65.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
sshportal through 1.19.5 contains a missing authorization vulnerability in the management shell 'key show' command that allows authenticated non-admin users to obtain decrypted backend private SSH keys. Attackers can request predictable key names like 'default' or 'host' to retrieve private keys and connect directly to backend hosts, bypassing ACLs and session recording.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
References
- https://hackmd.io/@hieuPenguinnn/sshportal-key-show-privkey-disclosure third-party-advisory
- https://github.com/moul/sshportal/blob/v1.19.5/pkg/bastion/shell.go#L1513-L1584 technical-description
- VulnCheck Advisory: sshportal through 1.19.5 Missing Authorization in 'key show' Command Exposes Private Keys third-party-advisory