CVE-2025-9873CWE-79cross-site-scripting

CVE-2025-9873

Medium · published December 13, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00289 · 20.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-12-13T21:16Z
References (3)
https://plugins.trac.wordpress.org/browser/a3-lazy-load/trunk/classes/class-a3-lazy-load.php#L430 · [email protected]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= · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/0d837229-52fa-42ae-b733-8fbeb444f110?source=cve · [email protected]
EPSS history
Timeline
  • 13 DEC 04:31Z
    a3 Lazy Load <= 2.7.5 - Authenticated (Contributor+) Stored Cross-Site Scripting
    cvelistv5