CVE-2026-7013

LOW EPSS 11.8%
Published Apr 26, 20262mo ago · Modified Jun 17, 20261w ago
1.9 CVSS 4.0
Low
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Published Apr 26, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
11.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-79 Cross-site Scripting Injection
CWE-94 Improper Control of Generation of Code (Code Injection) Injection

References 7

  • github.com https://github.com/maxsite/cms/
  • github.com https://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7
  • github.com https://github.com/maxsite/cms/releases/tag/v109
  • github.com https://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-mail_send-plugin-maxsite-cms.pdf.pdf
  • vuldb.com https://vuldb.com/submit/796738
  • vuldb.com https://vuldb.com/vuln/359592
  • vuldb.com https://vuldb.com/vuln/359592/cti

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.