Vulnerability details

CVE-2026-53545

Termix-SSH Termix

Termix: Remote Code Execution via Tunnel Disconnect pkill Command Injection

CVSS 3.1

9.8Critical

Official description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the DELETE /ssh/tunnel/disconnect/:tunnelName teardown path in src/backend/ssh/tunnel.ts interpolates endpointPort, sourcePort, endpointUsername, and endpointIP into single-quoted pkill -f patterns. An authenticated user who can edit a tunnel host field can include a single quote to terminate the pattern and append a shell command, which executes when the tunnel is disconnected. Successful exploitation runs arbitrary commands on the source SSH host with the privileges of the connected SSH account. This issue is fixed in version 2.3.2.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Termix-SSH	Termix	< 2.3.2	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/Termix-SSH/Termix/security/advisories/GHSA-5p86-jgr7-4hwx x_refsource_CONFIRM
https://github.com/Termix-SSH/Termix/pull/874 x_refsource_MISC
https://github.com/Termix-SSH/Termix/commit/52f4e51ae03b5b8d2608e1383e2ccf79d290132b x_refsource_MISC
https://github.com/Termix-SSH/Termix/releases/tag/release-2.3.2-tag x_refsource_MISC

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Details

Published: 2026-08-20
Last updated: 2026-08-22
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.72%

Probability of exploitation in 30 days

54.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')