CVE-2021-24963 LiteSpeed Cache < 4.4.4 - Admin+ Reflected Cross-Site Scripting

What is CVE-2021-24963?

CVE-2021-24963 is a medium-severity cross-site scripting vulnerability in Unknown LiteSpeed Cache, published on 3 Jan 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting

Weakness: CWE-79

Which versions are affected by CVE-2021-24963?

It affects 1 product.

Products include Litespeedtech Litespeed Cache.

How do I fix CVE-2021-24963?

No fix has been published for CVE-2021-24963 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-24963 being exploited?

There is no known exploitation of CVE-2021-24963 in the wild and no public exploit code.

Other vulnerabilities in Unknown LiteSpeed Cache

• CVE-2024-44000 WordPress LiteSpeed Cache plugin < 6.5.0.1 - Unauthenticated Account Takeover via Cookie Leak vulnerability Critical 9.8
• CVE-2024-28000 WordPress LiteSpeed Cache plugin <= 6.3.0.1 - Unauthenticated Privilege Escalation vulnerability Critical 9.8
• CVE-2024-47637 WordPress LiteSpeed Cache plugin <= 6.4.1 - Path Traversal vulnerability High 8.8
• CVE-2023-40000 WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Site Wide Stored XSS vulnerability High 8.3
• CVE-2023-45000 WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Broken Access Control on API vulnerability High 8.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3g97-4533-4g2p.