CVE-2021-24964: LiteSpeed Cache < 4.4.4 - IP Check Bypass to Unauthenticated Stored XSS
First published: Mon Jan 03 2022(Updated: )
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.
Credit: contact@wpscan.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| LiteSpeed Technologies LiteSpeed Cache | <4.4.4 |
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Frequently Asked Questions
What is the severity of CVE-2021-24964?
CVE-2021-24964 has a medium severity rating due to the potential for unauthorized access to certain endpoints.
How do I fix CVE-2021-24964?
To mitigate CVE-2021-24964, update the LiteSpeed Cache WordPress plugin to version 4.4.4 or later.
What are the risks associated with CVE-2021-24964?
CVE-2021-24964 allows attackers to bypass security restrictions by manipulating the X-Forwarded-For header.
Which versions of LiteSpeed Cache are affected by CVE-2021-24964?
LiteSpeed Cache versions prior to 4.4.4 are affected by CVE-2021-24964.
Does CVE-2021-24964 affect all WordPress installations?
CVE-2021-24964 specifically affects WordPress installations using the LiteSpeed Cache plugin before version 4.4.4.
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