MaxSite CMS Antispam Plugin plugin_antispam cross site scripting_CVE-2026-7011

4.8 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Description

A weakness has been identified in MaxSite CMS up to 109.3. Affected by this vulnerability is an unknown functionality of the file /admin/plugin_antispam of the component Antispam Plugin. Executing a manipulation of the argument f_logging_file can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 109.4 addresses this issue. This patch is called 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. Upgrading the affected component is advised. 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."

Basic Information

ID CVE-2026-7011

Source VulDB

Published Apr 26, 2026 at 00:30

Affected Product

Vendor MaxSite

Product CMS

Version 109.0

Affected Versions MaxSite CMS 109.0
MaxSite CMS 109.1
MaxSite CMS 109.2
MaxSite CMS 109.3

CWE Classification

CWE-79 CWE-94

References

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    "lastseen": "",
    "description": "A weakness has been identified in MaxSite CMS up to 109.3. Affected by this vulnerability is an unknown functionality of the file /admin/plugin_antispam of the component Antispam Plugin. Executing a manipulation of the argument f_logging_file can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 109.4 addresses this issue. This patch is called 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. Upgrading the affected component is advised. 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.\"",
    "published": "2026-04-26T00:30:20.988Z",
    "modified": "2026-04-26T00:30:20.988Z",
    "type": "cve",
    "title": "MaxSite CMS Antispam Plugin plugin_antispam cross site scripting",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/359591\nhttps://vuldb.com/vuln/359591/cti\nhttps://vuldb.com/submit/796736\nhttps://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-antispam-plugin-maxsite-cms.pdf\nhttps://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7\nhttps://github.com/maxsite/cms/releases/tag/v109\nhttps://github.com/maxsite/cms/",
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    "cvelist": null,
    "sourceData": "MaxSite CMS 109.0\nMaxSite CMS 109.1\nMaxSite CMS 109.2\nMaxSite CMS 109.3",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
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