6.1
Medium
CVE-2021-24964 The LiteSpeed Cache WordPress plugin before 4.4.4 does not properly verify that requests are coming from QUIC.cloud…
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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| LiteSpeed Cache 4.4 | earliest → < 4.4.4 | 4.4.4 |
Other CVEs of LiteSpeed Cache
The 5 CVEs of LiteSpeed Cache →
CVE-2026-113501
The LiteSpeed Cache WordPress plugin before 7.9.2 does not perform a capability check on its admin-notice dismissal…
3.1
Low
CVE-2026-113500
The LiteSpeed Cache WordPress plugin before 7.9.2 does not limit one of its HTML optimization routines to stylesheet…
7.5
High
CVE-2026-113499
The LiteSpeed Cache WordPress plugin before 7.9.2 does not restrict one of its HTML rewriting routines to stylesheet…
7.5
High
CVE-2021-24963
The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in…
Not rated