CVE-2023-40000
WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Site Wide Stored XSS vulnerability
- Published
- Apr 16, 2024
- Updated
- Apr 28, 2026
- Assigning CNA
- Patchstack
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:LHigh · next 30 days
- Percentile
- 99.0%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LiteSpeed Technologies LiteSpeed Cache allows Stored XSS.This issue affects LiteSpeed Cache: from n/a through 5.7.
Sources
http/cves/2023/CVE-2023-40000.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: dsl($.matchers[*].type)
- cve-2023-40000Exploit
Proof-of-concept exploit for CVE-2023-40000 targeting WordPress LiteSpeed Cache plugin versions < 5.7.0.1. Supports check and attack modes, with XSS payload that creates an admin user.
- CVE-2023-40000Detection
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