CVE-2026-8622
Received Received - Intake
Reflected Cross-Site Scripting in Image Sizes on Demand WordPress Plugin

Publication date: 2026-06-24

Last updated on: 2026-06-24

Assigner: Wordfence

Description
The Image Sizes on Demand plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHP_SELF Server Variable in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The injected payload only executes in the context of an administrator, as the settings page requires the manage_options capability to render.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-06-24
Last Modified
2026-06-24
Generated
2026-06-24
AI Q&A
2026-06-24
EPSS Evaluated
N/A
NVD
CVE-2026-8622
EUVD
EUVD-2026-38687
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wp_plugin image_sizes_on_demand to 1.3 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
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
AI Quick Actions
Instant insights powered by AI
Executive Summary

The Image Sizes on Demand plugin for WordPress has a Reflected Cross-Site Scripting (XSS) vulnerability via the PHP_SELF server variable in all versions up to and including 1.3.

This vulnerability exists because the plugin does not properly sanitize or escape input, allowing an attacker to inject arbitrary web scripts.

These injected scripts execute when a user is tricked into performing an action such as clicking a malicious link.

The payload only executes in the context of an administrator since the affected page requires the manage_options capability.

Impact Analysis

An unauthenticated attacker can exploit this vulnerability to inject malicious scripts that execute in the administrator's browser.

This can lead to unauthorized actions performed with administrator privileges, potentially compromising the website's security.

The vulnerability has a CVSS v3.1 base score of 6.1, indicating a medium severity with low attack complexity but requiring user interaction.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-8622. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart