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Servers and applications · WordPress plugins

CVE-2023-4372

LiteSpeed Cache: Cross-site Scripting

Severity
Medium 5.4
Published
23 Oct 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
5.7
Also known as
WPV-398076006596
Sources
NVD, WPVulnerability

Description

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'esi' shortcode in versions up to, and including, 5.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute…

Affected software

SoftwareAffected versions
LiteSpeed CacheServers and applications · cpe:a:litespeedtech:litespeed_cache
  • Every version up to 5.6
LiteSpeed CacheWordPress plugins · wp-plugin:litespeed-cache
  • Every version before 5.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-4372
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-4372
  • Wordfence https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/litespeed-cache/litespeed-cache-56-authenticated-contributor-stored-cross-site-scripting-via-shortcode