Stored Cross-Site Scripting in a3 Lazy Load Plugin for WordPress
CVE-2025-9873

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
A3 Lazy Load
Vendor
CVE Published:
13 December 2025

What is CVE-2025-9873?

The a3 Lazy Load plugin for WordPress exhibits a vulnerability that allows authenticated users, such as contributors and higher, to inject arbitrary web scripts into pages. This issue arises from inadequate input sanitization and output escaping on user-supplied attributes. Once injected, these scripts can execute whenever a user accesses the compromised page, potentially leading to unauthorized actions and sensitive data exposure.

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Deploy the Patch

Affected Version(s)

a3 Lazy Load * <= 2.7.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/a3-lazy-load/t...
https://plugins.trac.wordpress.org/changeset?sfp_email=&s...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Matthew Rollings
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