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Servers and applications · WordPress plugins

CVE-2021-24963

LiteSpeed Cache: Cross-site Scripting

Severity
Medium 4.8
Published
30 Nov 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
4.4.4
Also known as
WPV-4b0f12928658
Sources
NVD, WPVulnerability

Description

The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting

Affected software

SoftwareAffected versions
LiteSpeed CacheServers and applications · cpe:a:litespeedtech:litespeed_cache
  • Every version before 4.4.4
LiteSpeed CacheWordPress plugins · wp-plugin:litespeed-cache
  • Every version before 4.4.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-24963
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-24963
  • Wordfence https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/litespeed-cache/litespeed-cache-443-reflected-cross-site-scripting-via-qc-res