CVE-2026-79759 Termix: Cross-User Information Disclosure via Missing Ownership Check in deploy-to-host Endpoint
Attackers can access other users' credential metadata and trigger unauthorized SSH connections due to missing ownership checks in the deploy-to-host endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-79759?
CVE-2026-79759 is a medium-severity missing authorization vulnerability in Termix-SSH Termix, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 until 2.5.1, the POST /credentials/:id/deploy-to-host endpoint resolves credential and target-host records from attacker-controlled credentialId and targetHostId integer values without checking that either record belongs to the requesting user. In src/backend/database/routes/credentials.ts, differential errors reveal whether credential and host records exist and disclose each record's authType value. Properly encrypted passwords and keys are not disclosed, but a key-authenticated victim host can receive an outbound SSH connection attempt using the attacker's public key. This issue is fixed in version 2.5.1.
Weakness: CWE-639
Which versions are affected by CVE-2026-79759?
How do I fix CVE-2026-79759?
No fix has been published for CVE-2026-79759 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-79759 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79759 exists.