CVE-2026-15421
The Speed Optimizer – The All-In-One Performance-Boosting Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Image Tag Attributes in all versions up to, and including, 7.8.0 due to insufficient input sanitization and output…
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
Description
The Speed Optimizer – The All-In-One Performance-Boosting Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Image Tag Attributes in all versions up to, and including, 7.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the site administrator has enabled the Lazy Load Media option in the plugin settings.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.30% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.7.11/core/Lazy_Load/Abstract_Lazy_Load.php#L109
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.7.11/core/Lazy_Load/Lazy_Load.php#L39
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.7.11/core/Lazy_Load/Lazy_Load_Images.php#L31
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.8.0/core/Lazy_Load/Abstract_Lazy_Load.php#L109
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.8.0/core/Lazy_Load/Lazy_Load.php#L39
- https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.8.0/core/Lazy_Load/Lazy_Load_Images.php#L31
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fsg-cachepress/tags/7.8.0&new_path=%2Fsg-cachepress/tags/7.8.1
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3642965%40sg-cachepress%2Ftags%2F7.8.1&old=3581843%40sg-cachepress%2Ftags%2F7.8.0
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2626ad96-4346-4564-b6bd-0c226bd8dfd4?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.