Missing authorization in sshportal 'key show' exposes private keys
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
sshportal through 1.19.5 contains a missing authorization flaw (CWE-862) in the management shell 'key show' command. An authenticated non-admin user can obtain decrypted backend private SSH keys by requesting predictable key names such as 'default' or 'host'. The attacker can then connect directly to backend hosts, bypassing ACLs and session recording.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for sshportal.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-111638
- 2026-10-16 Alias added: GHSA-xmw3-crh7-9hmm
- 2026-10-18 Priority changed: MEDIUM → LOW
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-23 Priority changed: LOW → HIGH
References
Sources
- CVE-2026-111638 · CVE Program
- CVE-2026-111638 · NVD
- FIRST EPSS
- GHSA-xmw3-crh7-9hmm · GitHub Advisory Database · CC BY 4.0
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