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

Quick assessment

Affected
aurelienlws LWS Optimize – All-in-One Speed Booster & Cache Tools
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Aurélien LWS LWS Optimize – All-in-One Speed Booster & Cache Tools是Aurélien LWS个人开发者的一款一站式性能优化方案。 Aurélien LWS LWS Optimize – All-in-One Speed Booster & Cache Tools 3.3.19及之前版本存在路径遍历漏洞，该漏洞源于将同站 URL 转换为绝对文件系统路径，然后使用 file_get_contents ()/Minify\CSS::add ()

CVSS 4.9 · Medium EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
aurelienlws LWS Optimize – All-in-One Speed Booster & Cache Tools ≤ 3.3.19 affected
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I. Basic Information for CVE-2026-12089

Vulnerability Information
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Vulnerability Title
WS Optimize – All-in-One Speed Booster & Cache Tools <= 3.3.19 - Authenticated (Editor+) Arbitrary File Read
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Aurélien LWS LWS Optimize – All-in-One Speed Booster & Cache Tools 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Aurélien LWS LWS Optimize – All-in-One Speed Booster & Cache Tools是Aurélien LWS个人开发者的一款一站式性能优化方案。 Aurélien LWS LWS Optimize – All-in-One Speed Booster & Cache Tools 3.3.19及之前版本存在路径遍历漏洞，该漏洞源于将同站 URL 转换为绝对文件系统路径，然后使用 file_get_contents ()/Minify\CSS::add ()
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
aurelienlws LWS Optimize – All-in-One Speed Booster & Cache Tools 0 ~ 3.3.19 -

II. Public POCs for CVE-2026-12089

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III. Intelligence Information for CVE-2026-12089

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Other References for CVE-2026-12089 (2)

IV. Related Vulnerabilities

Same vendor: aurelienlws
Same weakness: CWE-22

V. Comments for CVE-2026-12089

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