Vulnerability · Published Jan 3, 2022 · Assigned by WPScan
CVE-2021-24964LiteSpeed Cache < 4.4.4 - IP Check Bypass to Unauthenticated Stored XSS
Medium 6.1
In plain English
A medium-severity cross-site scripting in LiteSpeed Cache from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | LiteSpeed Cache | 4.4.4 – before 4.4.4 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N