CVE-2026-100196 Details
Description
The LazyLoad Plugin – Lazy Load Images, Videos, and Iframes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment_content (rendered inline into the page HTML)' parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core's wp_kses_data allow-list does not strip the crafted payload on save because it uses only permitted tags and attributes; the event handler is concealed inside a broken attribute region and is only promoted to a real DOM attribute by the plugin's render-time str_replace transformation. Additionally, a site administrator must approve the crafted comment before the payload is served to other visitors.
A stored cross-site scripting vulnerability has been identified in the LazyLoad Plugin for WordPress, specifically in versions through 2.4.0. This vulnerability allows unauthenticated attackers to inject arbitrary scripts into pages, which are executed when users access the affected page. The issue arises from inadequate input sanitization and output escaping, particularly in the 'comment_content' parameter, which is rendered inline into the page HTML. WordPress's wp_kses_data allow-list fails to remove the injected payload because it only considers permitted tags and attributes. The malicious script is hidden within a broken attribute region and is transformed into a real DOM attribute by the plugin at render time. Furthermore, a site administrator must approve the comment before the injected script is executed for other visitors.
Users are advised to update the LazyLoad Plugin to version 2.4.1 or a newer patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 10, 2026CISA-ADP
Assessed Oct 11, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| LazyLoad | <= 2.4.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 11, 2026 | CVE Modified | CISA-ADP |
| Oct 10, 2026 | New CVE Received | [email protected] |