CVE-2026-66448
Received Received - Intake

Contributor XSS in Gallery PhotoBlocks <= 1.3.3

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Patchstack

Description
Contributor Cross Site Scripting (XSS) in Gallery PhotoBlocks <= 1.3.3 versions.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-27
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
CVE-2026-66448
EUVD
EUVD-2026-49248

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
patchstack gallery_photoblocks_plugin to 1.3.3 (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.

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Executive Summary

This is a Cross Site Scripting (XSS) vulnerability in the WordPress Gallery PhotoBlocks Plugin versions 1.3.3 and earlier. It allows attackers to inject malicious scripts into a website through user interaction, such as clicking a malicious link or visiting a crafted page. The vulnerability has a CVSS score of 6.5 and is classified under OWASP Top 10 A3: Injection.

Detection Guidance

To detect this vulnerability, check the installed version of the Gallery PhotoBlocks plugin in your WordPress site. If the version is 1.3.3 or earlier, the site is vulnerable. You can verify the version via the WordPress admin panel under Plugins or by inspecting the plugin files on the server.

Impact Analysis

Successful exploitation could allow attackers to inject malicious scripts that may lead to redirects, unwanted advertisements, or other HTML payloads being executed when visitors access the site. This could compromise the integrity and security of the website and its users.

Compliance Impact

This vulnerability could potentially affect compliance with GDPR and HIPAA by enabling attackers to inject malicious scripts into a website. This may lead to unauthorized data access, modification, or theft, which violates confidentiality and integrity requirements under these regulations.

Mitigation Strategies

Immediately update the Gallery PhotoBlocks plugin to version 1.3.4 or later. If updating is not possible, seek assistance from a hosting provider or web developer to apply necessary patches or mitigations.

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