CVE-2026-109963 (CVSS 4.3)

Description

Froxlor before 2.3.14 contains an insecure direct object reference vulnerability in the email template editor (admin_templates.php) because the mail body is fetched by mailbodyid without an adminid ownership check. Authenticated reseller admins can pair their own subjectid with sequential foreign mailbodyid values in edit requests to read other admins' email templates, including the full administrator's.

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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:L/I:N/A:N

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

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-639 CWE-639

References

Other References

https://github.com/froxlor/froxlor/security/advisories/GHSA-646m-cj89-hm32 https://www.vulncheck.com/advisories/froxlor-before-2.3.14-idor-in-email-template-editor-via-admin-templates-php https://github.com/froxlor/froxlor/security/advisories/GHSA-646m-cj89-hm32

Frequently Asked Questions

What is CVE-2026-109963? +

Froxlor before 2.3.14 contains an insecure direct object reference vulnerability in the email template editor (admin_templates.php) because the mail body is fetched by mailbodyid without an adminid ownership check. Authenticated reseller admins can pair their own subjectid with sequential foreign mailbodyid values in edit requests to read other admins' email templates, including the full administrator's. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-109963? +

CVE-2026-109963 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 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-109963? +

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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