CVE-2023-40000

WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Site Wide Stored XSS vulnerability

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.

Affected

LiteSpeed Technologies · LiteSpeed Cache

CVSS v3.1 NVD

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 PATCHSTACK

8.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

EPSS

54.87% chance of exploitation in the next 30 days, 99th percentile

Nuclei

high · CWE-79

Published

2024-04-16

Updated

2026-04-28

Proof-of-concept exploits (3)

• iveresk/cve-2023-400001★ · 2024-05-13
• quantiom/litespeed-cache-xss-poc5★ · 2024-05-12
• rxerium/CVE-2023-400007★ · 2025-10-14

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-40000.yaml

Security advisories

• https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-p…

References

• CVE Record
• NVD entry

Related

• CVE-2018-19052
• CVE-2020-3452
• CVE-2022-1388
• CVE-2022-21907
• CVE-2022-26134
• CVE-2022-29885