Vulnerability · Published Nov 7, 2026 · Assigned by Wordfence

CVE-2026-120677Optimole <= 4.2.18 - Unauthenticated Stored Cross-Site Scripting via Comment Content

High 7.2

In plain English

A high-severity cross-site scripting in Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization from optimole. There are no confirmed reports of exploitation so far.

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)–no EPSS score yet

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.2.18 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. Exploitation requires the comment to be approved by an administrator and for the affected post to contain at least one iframe or video element (e.g., a core Video block), which is sufficient under default plugin settings where video lazy loading is enabled.

Affected products (as reported)

Vendor	Product	Versions
optimole	Optimole – Optimize Images \| Convert WebP & AVIF \| CDN & Lazy Load \| Image Optimization	0 – through 4.2.18

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References