Vulnerability · Published Jun 13, 2026 · Assigned by Wordfence

CVE-2026-12089WS Optimize – All-in-One Speed Booster & Cache Tools <= 3.3.19 - Authenticated (Editor+) Arbitrary File Read

Medium 4.9

In plain English

A medium-severity path traversal in LWS Optimize – All-in-One Speed Booster & Cache Tools from aurelienlws. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.3%top 72.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
aurelienlws	LWS Optimize – All-in-One Speed Booster & Cache Tools	0 – through 3.3.19

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

In plain English

Official description

Affected products (as reported)

References