CVE-2023-40000: litespeed technologies litespeed cache Cross-site Scripting
CVSS: 8.3v3.1HighModified
Published 16-04-2024Last modified 28-04-2026
Vulnerability summary
CVE-2023-40000 is a high (CVSS 8.3) Cross-site Scripting vulnerability in litespeed technologies litespeed cache. EPSS estimates a 54.87% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 5.7.0.1.
CVSS score
8.3/10
010
High · v3.1 (CVE.org)EPSS score
54.87%
0%100%
Critical · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 16-04-2024PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 8.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:LSources3 sources · 6.1–8.3
- NVDNIST6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NDiffers
- wordfenceSource7.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
54.87%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 54.87% on 18-09-2026
18-09-202618-10-2026
EPSS score54.87%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCve 2023 40000
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Litespeed technologies1 product
- litespeed cache≥ n/a, ≤ 5.7
Litespeedtech1 product
- litespeed_cache< 5.7.0.1
Wordpress1 product
- litespeed-cache≤ 5.7 (fixed in 5.7.0.1)
3 vendors · 3 products