CVE-2026-82451
Received Received - Intake

Stored XSS in Formwork Visit Tracking via Unescaped Referer Header

Publication date: 2026-08-29

Last updated on: 2026-08-29

Assigner: VulnCheck

Description
Formwork through 2.3.14 contains a stored cross-site scripting vulnerability in visit tracking that records the Referer header host unescaped. Unauthenticated attackers can craft malicious Referer headers to inject markup that executes in administrator browsers when viewing the Statistics panel.

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Meta Information

Published
2026-08-29
Last Modified
2026-08-29
Generated
2026-08-29
AI Q&A
2026-08-29
EPSS Evaluated
N/A
NVD
CVE-2026-82451
EUVD
EUVD-2026-68106

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
getformwork formwork to 2.3.14 (inc)
getformwork formwork From 2.0.0 (inc) to 2.3.10 (inc)
getformwork formwork to 2.3.11 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in Formwork CMS versions up to 2.3.14. It occurs in the visit tracking feature where the Referer header host is recorded without proper escaping. Attackers can inject malicious markup via crafted Referer headers, which executes in administrator browsers when viewing the Statistics panel.

Detection Guidance

Check Formwork CMS version. If using versions up to 2.3.14, the system is vulnerable. Inspect the Referer header handling in statistics/index.php for unsanitized input. Look for unexpected scripts or markup in the Statistics panel of the admin dashboard.

Impact Analysis

Unauthenticated attackers can exploit this to inject scripts that run in admin browsers. This could lead to session hijacking, unauthorized actions, or data theft. Since visit tracking is enabled by default, the attack surface is broad and requires no user interaction beyond passive exploitation.

Compliance Impact

This vulnerability could violate GDPR by enabling unauthorized access to user data or admin sessions. For HIPAA, it may compromise protected health information if accessed through the admin panel. Compliance risks include data breaches, unauthorized access, and failure to protect sensitive information.

Mitigation Strategies

Upgrade Formwork to version 2.3.15 or later where the issue is patched. If immediate upgrade is not possible, disable visit tracking in the admin panel or sanitize Referer headers manually. Monitor admin panel access for suspicious activity.

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