CVE-2026-26279

Name: CVE-2026-26279
Creator: NVD / NIST
Published: 2026-03-03T23:15:55.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.80%

Last modified Jun 17, 2026

CVE-2026-26279 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.80%

52.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Froxlor	Froxlor	< 2.3.4

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

Timeline

Published: Mar 3, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-26279?

How severe is CVE-2026-26279?

CVE-2026-26279 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.

How do I fix CVE-2026-26279?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-26279?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST