CVE-2021-24964

Public Exploit
LiteSpeed Cache < 4.4.4 - IP Check Bypass to Unauthenticated Stored XSS

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 14.82% Top 10%
Third-Party Advisory wpscan.com
Affected: Unknown LiteSpeed Cache
Published at:
Updated at:

References

Link Tags
https://wpscan.com/vulnerability/e9966b3e-2eb9-4d70-8c18-6a829b4827cc exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-24964?
CVE-2021-24964 has been scored as a medium severity vulnerability.
How to fix CVE-2021-24964?
To fix CVE-2021-24964, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24964 being actively exploited in the wild?
It is possible that CVE-2021-24964 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24964?
CVE-2021-24964 affects Unknown LiteSpeed Cache.
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