CVE-2025-9873
a3 Lazy Load <= 2.7.5 - Authenticated (Contributor+) Stored Cross-Site Scripting
- State
- Published
- Severity
- 6.4 Medium
- Published
- Dec 13, 2025
- Updated
- Apr 8, 2026
- Reserved
- Sep 2, 2025
Description
The a3 Lazy Load plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.7.5 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
a3 Lazy Loada3rev |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0d837229-52fa-42ae-b733-8fbeb444f110?source=cve
- https://plugins.trac.wordpress.org/browser/a3-lazy-load/trunk/classes/class-a3-lazy-load.php#L430
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3377146%40a3-lazy-load&new=3377146%40a3-lazy-load&sfp_email=&sfph_mail=
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