EUVD Vulnerability Catalog
EUVD-2026-86161
Severity: CRITICAL
Base Score: 9.1
CVSS Version: 3.1
Vulnerability Description
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.4.1 until 2.5.1, an authenticated Termix administrator can store attacker-controlled domain and email values through PATCH /users/acme-ssl-settings and trigger their interpolation into a certbot shell command through POST /users/acme-ssl-request. In src/backend/database/routes/acme-ssl-routes.ts, child_process.execSync invokes /bin/sh -c with those values only wrapped in double quotes, so shell metacharacters can execute arbitrary operating-system commands as the Termix backend process. Both HTTP webroot and DNS Cloudflare challenge modes are affected, and compromise exposes Termix databases, process secrets, stored credentials, and network reachability. This issue is fixed in version 2.5.1.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
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Privileges Required (PR): High
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User Interaction (UI): None
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Scope (S): Changed
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Confidentiality Impact (C): High
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Integrity Impact (I): High
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Availability Impact (A): High
Affected Vendors & Systems
Vendor
Termix-SSH
References & Advisory Links
- https://github.com/Termix-SSH/Termix/security/advisories/GHSA-pr55-25gf-5f9v
- https://github.com/Termix-SSH/Termix/pull/1067
- https://github.com/Termix-SSH/Termix/commit/c7a9063a72071153723e668787548766c971f029
- https://github.com/Termix-SSH/Termix/commit/ddbdd5c437c2296607dfaa4265d6f63fbc1ca92e
- https://github.com/Termix-SSH/Termix/releases/tag/release-2.5.1-tag
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
GitHub_M
EPSS Probability
0.39
Known Aliases
CVE-2026-79766
Published On
2026-09-24
Last Updated
2026-09-29