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CVE-2021-24964

MEDIUM 6.1 CVSS 3.1
Published
January 3, 2022
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

The LiteSpeed Cache WordPress plugin before 4.4.4 does not properly verify that requests are coming from QUIC.cloud servers, allowing attackers to make requests to certain endpoints by using a specific X-Forwarded-For header value. In addition, one of the endpoint could be used to set CSS code if a setting is enabled, which will then be output in some pages without being sanitised and escaped. Combining those two issues, an unauthenticated attacker could put Cross-Site Scripting payloads in pages visited by users.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown LiteSpeed Cache — From 4.4.4 (including) to 4.4.4 (excluding)
  • litespeedtech litespeed_cache — Before 4.4.4

References

  • wpscan.com https://wpscan.com/vulnerability/e9966b3e-2eb9-4d70-8c18-6a829b4827cc Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record