CVE-2026-26279
This allows an authenticated admin to store arbitrary strings in the panel.adminmail setting.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.80% probability · 55th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78, CWE-482
- Affected
- froxlor/froxlor
- Source
- security-advisories@github.com
References
- https://github.com/froxlor/Froxlor/security/advisories/GHSA-33mp-8p67-xj7cExploit, Mitigation, Vendor Advisory
- https://github.com/froxlor/froxlor/commit/22249677107f8f39f8d4a238605641e87dab4343Patch
- https://github.com/froxlor/froxlor/releases/tag/2.3.4Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.