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CVE-2026-7011

MaxSite CMS Antispam Plugin plugin_antispam cross site scripting

Published: Apr 26, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-79
2.4LOW
NVD MITRE
EPSS Score
0.3%
Top 81.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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."

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79CWE-94

Affected Products

MaxSite
commercialaka maxsite cms
CMSOn-prem
Web & CMS Plugins / cms-core

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

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
and 4 more references View all →

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