Vulnerability Description
A security vulnerability has been detected in MaxSite CMS up to 109.3. Affected by this issue is some unknown functionality of the component mail_send Plugin. The manipulation of the argument f_subject/f_files/f_from leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 109.4 can resolve this issue. The identifier of the patch is 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. It is advisable to upgrade the affected component. The vendor was informed early about this issue. They classify it as a "Self-XSS". They deployed a countermeasure: "Nevertheless, we consider this a violation of secure coding standards. The lack of filtering via `htmlspecialchars()` has already been fixed in the latest patch to prevent incorrect data display."
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/maxsite/cms/
- https://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7
- https://github.com/maxsite/cms/releases/tag/v109
- https://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-mail_send-plug
- https://vuldb.com/submit/796738
- https://vuldb.com/vuln/359592
- https://vuldb.com/vuln/359592/cti
FAQ
What is CVE-2026-7013?
CVE-2026-7013 is a vulnerability with a CVSS score of 2.4 (LOW). A security vulnerability has been detected in MaxSite CMS up to 109.3. Affected by this issue is some unknown functionality of the component mail_send Plugin. The manipulation of the argument f_subjec...
How severe is CVE-2026-7013?
CVE-2026-7013 has been rated LOW with a CVSS base score of 2.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-7013?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.