The LWS Optimize – All-in-One Speed Booster & Cache Tools plugin for WordPress is vulnerable to Arbitrary File Read in versions up to, and including, 3.3.19. This is due to the combine_current_css() function trusting <link rel="stylesheet" href="..."> values harvested from page HTML and converting same-site URLs to absolute filesystem paths before reading them with file_get_contents()/Minify\CSS::add(), without enforcing that the resolved path stay within ABSPATH or have a .css extension. This makes it possible for authenticated attackers, with Editor-level access and above, to read arbitrary files.

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Fixes

Solution

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Workaround

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History

Sat, 13 Jun 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Aurelienlws
Aurelienlws lws Optimize – All-in-one Speed Booster & Cache Tools
Wordpress
Wordpress wordpress
Vendors & Products Aurelienlws
Aurelienlws lws Optimize – All-in-one Speed Booster & Cache Tools
Wordpress
Wordpress wordpress

Sat, 13 Jun 2026 02:45:00 +0000

Type Values Removed Values Added
Description The LWS Optimize – All-in-One Speed Booster & Cache Tools plugin for WordPress is vulnerable to Arbitrary File Read in versions up to, and including, 3.3.19. This is due to the combine_current_css() function trusting <link rel="stylesheet" href="..."> values harvested from page HTML and converting same-site URLs to absolute filesystem paths before reading them with file_get_contents()/Minify\CSS::add(), without enforcing that the resolved path stay within ABSPATH or have a .css extension. This makes it possible for authenticated attackers, with Editor-level access and above, to read arbitrary files.
Title WS Optimize – All-in-One Speed Booster & Cache Tools <= 3.3.19 - Authenticated (Editor+) Arbitrary File Read
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-13T02:29:02.487Z

Reserved: 2026-06-12T13:57:55.876Z

Link: CVE-2026-12089

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-13T03:16:19.573

Modified: 2026-06-13T03:16:19.573

Link: CVE-2026-12089

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-13T12:29:10Z

Weaknesses