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 whenever a user accesses an injected page.
References (4)
Core 4
Scores
CVSS v3
6.4
EPSS
0.0198
EPSS Percentile
83.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
litespeedtech/LiteSpeed Cache
< 5.6
litespeedtech/litespeed_cache
< 5.6
Published
Jan 11, 2024
Tracked Since
Feb 18, 2026