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

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MEDIUM

MaxSite CMS Redirect Plugin cross site scripting

Published Apr 26, 2026

4.8

MEDIUM

CVSS 4.0

EPSS 0.38%

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."

Affected products

Vendor MaxSite Product CMS Default
n/a
- Version
  109.0
  Status
  affected
  Constraints
  -
- Version
  109.1
  Status
  affected
  Constraints
  -
- Version
  109.2
  Status
  affected
  Constraints
  -
- Version
  109.3
  Status
  affected
  Constraints
  -
- Version
  109.4
  Status
  unaffected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

MaxSite

CMS

n/a

Version	Status	Constraints
109.0	affected	-
109.1	affected	-
109.2	affected	-
109.3	affected	-
109.4	unaffected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-79

Cross-site Scripting (XSS)

CWE-94

Code Injection

References (8)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25686
Advisory
https://github.com/maxsite/cms/
product
https://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7
patch
https://github.com/maxsite/cms/releases/tag/v109
patch
https://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-redirect-plugin-maxsite-cms.pdf.pdf
exploit
https://vuldb.com/submit/796737
third-party-advisory
https://vuldb.com/vuln/359593
vdb-entrytechnical-description
https://vuldb.com/vuln/359593/cti
signaturepermissions-required

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25686		Advisory
https://github.com/maxsite/cms/		product
https://github.com/maxsite/cms/commit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7		patch
https://github.com/maxsite/cms/releases/tag/v109		patch
https://github.com/wnaspy/CVE/blob/main/Report-%20Stored%20XSS-in-redirect-plugin-maxsite-cms.pdf.pdf		exploit
https://vuldb.com/submit/796737		third-party-advisory
https://vuldb.com/vuln/359593		vdb-entrytechnical-description
https://vuldb.com/vuln/359593/cti		signaturepermissions-required