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CVE-2026-7013

2.4 · LOW

A security vulnerability has been detected in MaxSite CMS up to 109.3.

Published Apr 26, 2026CWE-79EPSS 0.38%

Overview

CVE-2026-7013 is a low-severity vulnerability. It was published on April 26, 2026 and has a CVSS 3.1 base score of 2.4 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/maxsite/cms/GitHubgithub.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7GitHubgithub.com/maxsite/cms/releases/tag/v109GitHubgithub.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-mail_send-plugin-maxsite-cms.pdf.pdfRefvuldb.com/submit/796738Refvuldb.com/vuln/359592Refvuldb.com/vuln/359592/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-7013?

CVE-2026-7013 is a low-severity vulnerability. It was published on April 26, 2026 and has a CVSS 3.1 base score of 2.4 (LOW).

How severe is CVE-2026-7013?

This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-7013?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-7013?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-7013 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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