PT-2025-51086 · WordPress · A3 Lazy Load

Matthew Rollings · Published 2025-12-13 · Updated 2025-12-13 · CVE-2025-9873

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions a3 Lazy Load versions prior to 2.7.6

Description The a3 Lazy Load plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping of user-supplied attributes. This allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the affected page.

Recommendations Update a3 Lazy Load to version 2.7.6 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-9873

Affected Products

A3 Lazy Load

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-9873 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/0d837229-52fa-42ae-b733-8fbeb444f110?source=cve · Note
• https://t.me/CVEtracker/39693 · Telegram Post
• https://plugins.trac.wordpress.org/browser/a3-lazy-load/trunk/classes/class-a3-lazy-load.php#L430 · Note
• https://twitter.com/CVEnew/status/1999865375820071402 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1999898128011403297 · Twitter Post
• 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= · Note