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Vulnerability record · CVE-2026-53545 · published 19 August 2026

CVE-2026-53545: OS command injection vulnerability

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.

9.8 CVSS 3.1 Critical EPSS 0.73% · top 47.8% CWE-78 · OS command injection Deferred
9.8CVSS 3.1 base score
0.73%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-53545), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.