CVE-2026-26279CRITICAL 9.1EPSS p51.8%
CVE-2026-26279CVE-2026-26279
Description
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.
Scoring
| CVSS 3.1 | 9.1 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 0.80% probability of exploitation · percentile 51.8% · 2026-06-18T12:00:27Z |
| Published | 2026-03-03 |
| Last modified | 2026-03-05 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Comparing instead of Assigningcwe-482 | 0% | live |
| Weakness | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-78 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.