Medium severity · published Apr 11, 2026
CVE-2026-5226
Optimole <= 4.2.3 - Reflected Cross-Site Scripting via Page Profiler URL
6.1
CVSS
0.5%
EPSS
No
On KEV
Description
The Optimole – Optimize Images in Real Time plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL paths in versions up to, and including, 4.2.3 This is due to insufficient output escaping on user-supplied URL paths in the get_current_url() function, which are inserted into JavaScript code via str_replace() without proper JavaScript context escaping in the replace_content() function. 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OO
Optimole – Optimize Images in Real Time · optimole
through 4.2.3 · source: vendor
Affected product
OO
Optimole – Optimize Images in Real Time
optimole
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5226
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5226
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/admin.php#L1012
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/manager.php#L459
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/manager.php#L542
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/admin.php#L1012
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/manager.php#L459
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/manager.php#L542
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4.3
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