Stored Cross-Site Scripting Vulnerability in Optimole Plugin for WordPress
CVE-2026-77365

7.2HIGH

Key Information:

Vendor

WordPress
Status
Optimole – Optimize Images | Convert Webp & Avif | Cdn & Lazy Load | Image Optimization
Vendor
CVE Published:
28 August 2026

What is CVE-2026-77365?

The Optimole plugin for WordPress, specifically versions up to and including 4.2.10, is susceptible to a stored cross-site scripting (XSS) vulnerability. This arises from inadequate input sanitization and output escaping for the 'a' (above_fold_images) parameter. Attackers can exploit this flaw to inject malicious scripts into the web pages, which will be executed in the browser of any user visiting the compromised page, potentially leading to unauthorized actions or data leakage.

Affected Version(s)

Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization 0 <= 4.2.10

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/optimole-wp/ta...
https://plugins.trac.wordpress.org/browser/optimole-wp/ta...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Osvaldo Noe Gonzalez Del Rio (Os)
.