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CVE-2026-12089

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

Published: Jun 13, 2026Updated: Jun 13, 2026 Sources: CVE List NVD
NVD MITRE
4.9CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-22

Affected Products

LWS Optimize – All-in-One Speed Booster & Cache Tools
aurelienlws
Web & CMS Plugins / wordpress-plugin
aurelienlwsoss-projectWeb & CMS Pluginsaka lws cleaner, lwscache

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/5cb80db2-753c-40fa-aee4-7d8c1749d037?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/lws-optimize/tags/3.3.19/Classes/Front/LwsOptimizeCSSManager.php#L289
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/lws-optimize/tags/3.3.19/Classes/Front/LwsOptimizeCSSManager.php#L61
plugins.trac.wordpress.org

Timeline

Published
Jun 13, 2026
Last Updated
Jun 13, 2026

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