CVE-2021-24963
MEDIUMCVSS 4.8/10EPSS 0.65%
Last modified
CVE-2021-24963 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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. EPSS estimates a 0.65% chance of exploitation in the next 30 days.
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
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Litespeedtech | Litespeed Cache | < 4.4.4 |
References
- https://plugins.trac.wordpress.org/changeset/2634373Patch, Third Party Advisory
- https://wpscan.com/vulnerability/7f8b4275-7586-4e04-afd9-d12bdab6ba9bExploit, Third Party Advisory
- https://plugins.trac.wordpress.org/changeset/2634373Patch, Third Party Advisory
- https://wpscan.com/vulnerability/7f8b4275-7586-4e04-afd9-d12bdab6ba9bExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-24963?
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
How severe is CVE-2021-24963?
CVE-2021-24963 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.
How do I fix CVE-2021-24963?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-24963?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST