6.4

CVE-2023-4372: litespeedtech litespeed_cache Cross-site Scripting

CVSS: 6.4v3.1MediumModified
Published 11-01-2024Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2023-4372 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in litespeedtech litespeed_cache. EPSS estimates a 16.77% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
16.77%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-01-2024
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'esi' shortcode in versions up to, and including, 5.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

16.77%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

0.00 pp

From 16.77% on 18-09-2026

18-09-202618-10-2026
EPSS score
16.77%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Litespeedtech1 product
Wordpress1 product
  • litespeed-cache≤ 5.6 (fixed in 5.7)

2 vendors · 2 products

References

5 links