The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the lazy-loading image processing in all versions up to, and including, 3.1.14. This is due to the use of an overly permissive regular expression in the `add_lazyload` function that replaces all occurrences of `\ssrc=` in image tags without limiting to the actual attribute. 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 by crafting an image tag where the `src` URL contains a space followed by `src=`, causing the regex to break the HTML structure and promote text inside attribute values into executable HTML attributes.
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References
History
Sat, 21 Mar 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the lazy-loading image processing in all versions up to, and including, 3.1.14. This is due to the use of an overly permissive regular expression in the `add_lazyload` function that replaces all occurrences of `\ssrc=` in image tags without limiting to the actual attribute. 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 by crafting an image tag where the `src` URL contains a space followed by `src=`, causing the regex to break the HTML structure and promote text inside attribute values into executable HTML attributes. | |
| Title | Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored Cross-Site Scripting via Lazy-loaded Image Attributes | |
| Weaknesses | CWE-79 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-03-20T23:25:14.410Z
Reserved: 2026-02-12T21:12:58.849Z
Link: CVE-2026-2430
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Status : Received
Published: 2026-03-21T00:16:26.053
Modified: 2026-03-21T00:16:26.053
Link: CVE-2026-2430
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OpenCVE Enrichment
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Weaknesses