WS Optimize – All-in-One Speed Booster & Cache Tools <= 3.3.19 - Authenticated (Editor+) Arbitrary File Read
| CVE | CVE-2026-12089 |
|---|---|
| CVSS | 4.9 (Medium) |
| Publicly Published | June 12, 2026 |
| Last Updated | June 13, 2026 |
| Researcher |
Omar Elshopky (3l5h0pky)
|
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.
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Vulnerability Details for LWS Optimize – All-in-One Speed Booster & Cache Tools
| Software Type | Plugin |
|---|---|
| Software Slug | lws-optimize (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 3.3.20, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in LWS Optimize – All-in-One Speed Booster & Cache Tools
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | LWS Optimize <= 1.9.1 - Cross-Site Request Forgery | CVE-2024-30541 | Dhabaleshwar Das | March 29, 2024 | |
| 2 | LWS Plugins <= (Various Versions) - Missing Authorization Checks | December 12, 2022 |
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