CVE-2026-100196 LazyLoad Plugin <= 2.4.0 - Unauthenticated Stored Cross-Site Scripting via Comment Content

Q: What is CVE-2026-100196?

CVE-2026-100196 is a high-severity cross-site scripting vulnerability in wp_media LazyLoad Plugin – Lazy Load Images, Videos, and Iframes, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2026-100196 being exploited?

There is no known exploitation of CVE-2026-100196 in the wild and no public exploit code.

Q: How do I fix CVE-2026-100196?

No fix has been published for CVE-2026-100196 yet. Limit exposure of the affected software until one is available.

High 7.2 Published 10 Oct 2026 Updated 11 Oct 2026

Unauthenticated attackers can inject arbitrary scripts via comments, leading to code execution when an admin approves the comment and users view the page.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-100196?

CVE-2026-100196 is a high-severity cross-site scripting vulnerability in wp_media LazyLoad Plugin – Lazy Load Images, Videos, and Iframes, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2026-100196?

How do I fix CVE-2026-100196?

No fix has been published for CVE-2026-100196 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-100196 being exploited?