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Vulnerability record · CVE-2026-53542 · published 19 August 2026

CVE-2026-53542: 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 archive creation endpoint in src/backend/ssh/file-manager.ts passes selected file basenames to tar without an end-of-options marker and without making the operands unambiguously relative. A user with access to an SSH file-manager session can select basenames beginning with GNU tar options such as --checkpoint=1 and --checkpoint-action=exec, causing tar, tar.gz, tar.bz2, or tar.xz creation to interpret those names as options. The resulting checkpoint action executes commands on the managed SSH host with the privileges of the connected SSH account, allowing file disclosure, modification, and service disruption. This issue is fixed in version 2.3.2.

8.8 CVSS 3.1 High EPSS 0.66% · top 50.4% CWE-78 · OS command injection Deferred
8.8CVSS 3.1 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
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 archive creation endpoint in src/backend/ssh/file-manager.ts passes selected file basenames to tar without an end-of-options marker and without making the operands unambiguously relative. A user with access to an SSH file-manager session can select basenames beginning with GNU tar options such as --checkpoint=1 and --checkpoint-action=exec, causing tar, tar.gz, tar.bz2, or tar.xz creation to interpret those names as options. The resulting checkpoint action executes commands on the managed SSH host with the privileges of the connected SSH account, allowing file disclosure, modification, and service disruption. This issue is fixed in version 2.3.2.

CVSS:3.1/AV:N/AC:L/PR:L/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-rwj6-6vh7-45pv
https://github.com/Termix-SSH/Termix/security/advisories/GHSA-rwj6-6vh7-45pv

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Source: NIST National Vulnerability Database (record CVE-2026-53542), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.