Auth bypass in Moul Sshportal
CVE-2026-111638
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/sshportal-key-show-privkey-disclosure (third-party-advisory)
- github.com/moul/sshportal/blob/v1.19.5/pkg/bastion/shell.go (technical-description)
- www.vulncheck.com/advisories/sshportal-through-1.19.5-missing-authorization-in-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111638?
- CVE-2026-111638 is a high-severity vulnerability in Moul Sshportal, classified under Missing Authorization. CVSS score: 7.7/10. Published 2026-10-16.
- How severe is CVE-2026-111638?
- High severity. CVSS v3 base score is 7.7 out of 10.