MaxSite CMS up to 109.3 Redirect Plugin f_all/f_all404 cross site scripting

Summaryinfo

A vulnerability has been found in MaxSite CMS up to 109.3 and classified as problematic. This vulnerability affects unknown code of the component Redirect Plugin. This manipulation of the argument f_all/f_all404 causes cross site scripting. This vulnerability appears as CVE-2026-7012. The attack may be initiated remotely. In addition, an exploit is available. The affected component should be upgraded. 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."

Detailsinfo

A vulnerability was found in MaxSite CMS up to 109.3. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component Redirect Plugin. The manipulation of the argument f_all/f_all404 with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-7012. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. 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."

Upgrading to version 109.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.2

VulDB Base Score: 2.4
VulDB Temp Score: 2.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CMS 109.4
Patch: 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7

Timelineinfo

04/25/2026 Advisory disclosed
04/25/2026 +0 days VulDB entry created
04/25/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-7012 (🔒)
GCVE (CVE): GCVE-0-2026-7012
GCVE (VulDB): GCVE-100-359593
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/25/2026 12:19
Changes: 04/25/2026 12:19 (62)
Complete: 🔍
Submitter: konchan
Cache ID: 216::103

Submitinfo

Accepted

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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