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High · 7.2 Public exploit CVE-2026-67599 EUVD-2026-52409GHSA-pfmm-hj96-f74x

ClearOS 7.9 OS Command Injection via Log Viewer filter parameter

Published Aug 3, 2026 · Updated Aug 4, 2026 · Assigned by VulnCheck

Vendor: ClearFoundation Product: ClearOS

Description

ClearOS 7.9 contains an OS command injection vulnerability in the Log Viewer component that allows authenticated attackers to execute arbitrary commands by submitting unsanitized input through the filter parameter, which is interpolated directly into a shell command in File.php. Attackers can inject command substitution payloads into the filter parameter to execute arbitrary commands as the webconfig user, and due to extensive NOPASSWD sudo privileges granted to that user by default, immediately escalate to root.

Affected products

VendorProductAffectedFixed
ClearFoundation ClearOS 7.9 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References