CVE-2026-90935: Access Control Flaw (CVSS 4.3)

Description

Froxlor before 2.3.7 fails to validate the mysql_server parameter against a customer's allowed_mysqlserver allowlist in the Mysqls.add API command. Attackers can supply a disallowed server index to create MySQL databases and users on forbidden servers, bypassing per-customer access controls.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-285 CWE-285

References

Other References

https://github.com/froxlor/froxlor/security/advisories/GHSA-q4rm-m6xh-5pv7 https://www.vulncheck.com/advisories/froxlor-before-2.3.7-authorization-bypass-via-mysqls-add-api https://github.com/froxlor/froxlor/security/advisories/GHSA-q4rm-m6xh-5pv7

Frequently Asked Questions

What is CVE-2026-90935? +

Froxlor before 2.3.7 fails to validate the mysql_server parameter against a customer's allowed_mysqlserver allowlist in the Mysqls.add API command. Attackers can supply a disallowed server index to create MySQL databases and users on forbidden servers, bypassing per-customer access controls. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-90935? +

CVE-2026-90935 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-90935? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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