CVE-2026-2300

BJ Lazy Load <= 1.0.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom HTML Block

Published May 12, 2026 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Description
The BJ Lazy Load plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `filter_images()` function in all versions up to, and including, 1.0.9. This is due to the use of regex-based HTML processing (`preg_replace`) that does not properly handle HTML attribute boundaries when replacing `src` attributes, allowing crafted content inside a `class` attribute value to be promoted to real DOM attributes after processing. 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Bjornjohansen
Bjornjohansen bj Lazy Load
Wordpress
Wordpress wordpress
Vendors & Products Bjornjohansen
Bjornjohansen bj Lazy Load
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Description The BJ Lazy Load plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `filter_images()` function in all versions up to, and including, 1.0.9. This is due to the use of regex-based HTML processing (`preg_replace`) that does not properly handle HTML attribute boundaries when replacing `src` attributes, allowing crafted content inside a `class` attribute value to be promoted to real DOM attributes after processing. 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.
Title BJ Lazy Load <= 1.0.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom HTML Block
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
May 13, 2026, 3:52 PM
Reserved
Feb 10, 2026, 6:03 PM
Status
Deferred
Published
May 12, 2026, 9:16 AM
Modified
Jun 17, 2026, 10:30 AM