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CVE-2026-26279

CVE-2026-26279 · Froxlor Admin-to-Root Privilege Escalation via Input Validation Bypass + OS Command Injection

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Froxlor is open source server administration software. Prior to 2.3.4, a typo in Froxlor's input validation code (== instead of =) completely disables email format checking for all settings fields declared as email type. This allows an authenticated admin to store arbitrary strings in the panel.adminmail setting. This value is later concatenated into a shell command executed as root by a cron job, where the pipe character | is explicitly whitelisted. The result is full root-level Remote Code Execution. This vulnerability is fixed in 2.3.4.

CVSS 9.1 · Critical · EPSS 0.9% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • froxlor

    Versions
    • < 2.3.4: Affected

    No fix published

  • froxlor/froxlor Packagist

    Versions
    • 0.10.0
    • 0.10.0-rc1
    • 0.10.0-rc2
    • 0.10.1
    • 0.10.10
    • 0.10.11
    • 0.10.12
    • 0.10.13
    • 0.10.14
    • 0.10.15
    • 0.10.16
    • 0.10.17
    • 0.10.18
    • 0.10.19
    • 0.10.2
    • 0.10.20
    • 0.10.21
    • 0.10.22
    • 0.10.23
    • 0.10.23.1
    • 0.10.24
    • 0.10.25
    • 0.10.26
    • 0.10.27
    • 0.10.28
    • 0.10.29
    • 0.10.29.1
    • 0.10.3
    • 0.10.30
    • 0.10.31
    • 0.10.32
    • 0.10.33
    • 0.10.34
    • 0.10.34.1
    • 0.10.35
    • 0.10.35.1
    • 0.10.36
    • 0.10.37
    • 0.10.38
    • 0.10.38.1
    • 0.10.38.2
    • 0.10.38.3
    • 0.10.4
    • 0.10.5
    • 0.10.6
    • 0.10.7
    • 0.10.8
    • 0.10.9
    • 2.0.0
    • 2.0.1
    • 2.0.10
    • 2.0.11
    • 2.0.12
    • 2.0.13
    • 2.0.14
    • 2.0.15
    • 2.0.16
    • 2.0.17
    • 2.0.18
    • 2.0.19
    • 2.0.2
    • 2.0.20
    • 2.0.21
    • 2.0.22
    • 2.0.23
    • 2.0.24
    • 2.0.3
    • 2.0.4
    • 2.0.5
    • 2.0.6
    • 2.0.7
    • 2.0.8
    • 2.0.9
    • 2.1.0
    • 2.1.0-beta1
    • 2.1.0-beta2
    • 2.1.0-rc1
    • 2.1.0-rc2
    • 2.1.0-rc3
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.1.4
    • 2.1.5
    • 2.1.6
    • 2.1.7
    • 2.1.8
    • 2.1.9
    • 2.2.0
    • 2.2.0-rc1
    • 2.2.0-rc2
    • 2.2.0-rc3
    • 2.2.1
    • 2.2.2
    • 2.2.3
    • 2.2.4
    • 2.2.5
    • 2.2.6
    • 2.2.7
    • 2.2.8
    • 2.3.0
    • 2.3.0-rc1
    • 2.3.1
    • 2.3.2
    • 2.3.3
    Affected ranges
    • ECOSYSTEM: < 2.3.4

    Update to 2.3.4

Original sources

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