CVE-2026-2352
The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ao_post_preload' meta value in all versions up to, and including, 3.1.14.
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
Description
The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ao_post_preload' meta value in all versions up to, and including, 3.1.14. This is due to insufficient input sanitization in the `ao_metabox_save()` function and missing output escaping when the value is rendered into a `<link>` tag in `autoptimizeImages.php`. 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, granted the "Image optimization" or "Lazy-load images" setting is enabled in the plugin configuration.
- 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
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://github.com/futtta/autoptimize/commit/60d1e487e536a97ae317784f8aeaf0d2e93cd717
- https://plugins.trac.wordpress.org/browser/autoptimize/tags/3.1.14/classes/autoptimizeImages.php#L804
- https://plugins.trac.wordpress.org/browser/autoptimize/tags/3.1.14/classes/autoptimizeImages.php#L938
- https://plugins.trac.wordpress.org/browser/autoptimize/tags/3.1.14/classes/autoptimizeMetabox.php#L276
- https://plugins.trac.wordpress.org/browser/autoptimize/trunk/classes/autoptimizeImages.php#L804
- https://plugins.trac.wordpress.org/browser/autoptimize/trunk/classes/autoptimizeMetabox.php#L276
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3482530%40autoptimize&new=3482530%40autoptimize&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5f3f9891-710e-49e4-b388-aa6d99c01840?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.