7.2

CVE-2026-66599: liquid web / stellarwp wpcomplete Cross-site Scripting

CVSS: 7.2v3.1HighDeferred
Published 24-08-2026Last modified 24-08-2026
Open JSON

Vulnerability summary

CVE-2026-66599 is a high (CVSS 7.2) Cross-site Scripting vulnerability in liquid web / stellarwp wpcomplete. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.5% of scored vulnerabilities. Fixed in 2.9.5.7.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v3.1 (wordfence)
EPSS score
0.25%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-08-2026
    PublishedVulnerability first disclosed.
  2. 24-08-2026
    Last modifiedVulnerability information updated.

Description

Unauthenticated Cross Site Scripting (XSS) in WPComplete <= 2.9.5.6 versions.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

+0.11 pp

From 0.15% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.25%

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

Liquid web / stellarwp1 product
Wordpress1 product
  • wpcomplete≤ 2.9.5.6 (fixed in 2.9.5.7)

2 vendors · 2 products

References

2 links