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CVE-2026-7012— MaxSite CMS Redirect Plugin cross site scripting

Quick assessment

Affected
MaxSite CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MaxSite CMS是俄国MaxSite CMS开源的一款网站内容管理系统。 MaxSite CMS 109.3及之前版本存在跨站脚本漏洞，该漏洞源于Redirect Plugin组件中f_all/f_all404参数操作，可能导致跨站脚本攻击。

CVSS 2.4 · Low EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-7012

Vulnerability Information
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Vulnerability Title
MaxSite CMS Redirect Plugin cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in MaxSite CMS up to 109.3. This affects an unknown part of the component Redirect Plugin. The manipulation of the argument f_all/f_all404 results in cross site scripting. The attack can be launched remotely. The exploit is now public and may be used. Upgrading to version 109.4 is able to mitigate this issue. The patch is identified as 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. You should 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."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
MaxSite CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MaxSite CMS是俄国MaxSite CMS开源的一款网站内容管理系统。 MaxSite CMS 109.3及之前版本存在跨站脚本漏洞，该漏洞源于Redirect Plugin组件中f_all/f_all404参数操作，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MaxSite CMS 109.0 -

II. Public POCs for CVE-2026-7012

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III. Intelligence Information for CVE-2026-7012

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Patches & Fixes for CVE-2026-7012 (1)

Vendor Advisories for CVE-2026-7012 (1)

Vendor Pages for CVE-2026-7012 (1)

Other References for CVE-2026-7012 (1)

Same Patch Batch · MaxSite · 2026-04-26 · 6 CVEs total

CVE-2026-7014 2.4 LOW MaxSite CMS down_count Plugin cross site scripting
CVE-2026-7013 2.4 LOW MaxSite CMS mail_send Plugin cross site scripting
CVE-2026-7015 2.4 LOW MaxSite CMS Guestbook Plugin cross site scripting
CVE-2026-7016 2.4 LOW MaxSite CMS ushki Plugin cross site scripting
CVE-2026-7011 2.4 LOW MaxSite CMS Antispam Plugin plugin_antispam cross site scripting

IV. Related Vulnerabilities

Same product: CMS
Same vendor: MaxSite
Same weakness: CWE-79

V. Comments for CVE-2026-7012

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