Auth bypass in Termix-Ssh Termix
CVE-2026-79759
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
- Termix-Ssh Termix — versions >= 1.7.0, < 2.5.1
Weakness classification (CWE)
References
- github.com/Termix-SSH/Termix/security/advisories/GHSA-w4cf-69fj-g96f
- github.com/Termix-SSH/Termix/pull/1067
- github.com/Termix-SSH/Termix/commit/b0598294a6aeed866f51ce58067f43c1d751c7a6
- github.com/Termix-SSH/Termix/commit/ddbdd5c437c2296607dfaa4265d6f63fbc1ca92e
- github.com/Termix-SSH/Termix/releases/tag/release-2.5.1-tag
Frequently asked questions
- What is CVE-2026-79759?
- CVE-2026-79759 is a medium-severity vulnerability in Termix-Ssh Termix, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-09-24.
- How severe is CVE-2026-79759?
- Medium severity. CVSS v3 base score is 4.3 out of 10.