CVE-2026-28141
Received Received - Intake

Unauthenticated XSS in NextGEN Gallery

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in NextGEN Gallery <= 4.2.3 versions.

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Meta Information

Published
2026-08-06
Last Modified
2026-08-06
Generated
2026-08-06
AI Q&A
2026-08-06
EPSS Evaluated
N/A
NVD
CVE-2026-28141
EUVD
EUVD-2026-53944

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
photocrati nextgen_gallery to 4.2.3 (inc)
imagely nextgen_gallery to 4.2.3 (inc)

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.

Attack-Flow Graph

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Executive Summary

CVE-2026-28141 is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting NextGEN Gallery plugin versions 4.2.3 and below. It allows attackers to inject malicious scripts into web pages viewed by users. Exploitation requires user interaction like clicking a malicious link.

Detection Guidance

Detecting this XSS vulnerability requires checking the installed version of the NextGEN Gallery plugin. Use WordPress admin dashboard to view the plugin version or check via file system for the plugin directory. Commands like 'grep -r "NextGEN Gallery" /path/to/wordpress/wp-content/plugins/' can help identify the plugin version.

Impact Analysis

Attackers could inject scripts to perform actions like redirects or display unwanted ads. This could lead to stolen session cookies, account takeovers, or defacement of websites. The impact depends on user privileges and site configuration.

Compliance Impact

XSS vulnerabilities can lead to unauthorized data access or modification, violating GDPR (data protection) and HIPAA (health data privacy). Compliance may be compromised if user data is exposed or altered due to exploitation.

Mitigation Strategies

Immediately update the NextGEN Gallery plugin to version 4.2.4 or later. If updating is not possible, apply the Patchstack mitigation rule to block attacks until the plugin is updated. Contact your hosting provider or developer for assistance if needed.

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