Answer in brief
CVE-2026-66599 records a Unknown severity vulnerability in WordPress WPComplete plugin <= 2.9.5.6 - Cross Site Scripting (XSS) vulnerability. The current sources do not mark it as known exploited. The current feed maps Liquid Web / StellarWP/WPComplete (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Liquid Web / StellarWP/WPComplete (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Liquid Web / StellarWP/WPCompletegeneric | n/a | Not reported |
Published upstream
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 24, 2026
Unauthenticated Cross Site Scripting (XSS) in WPComplete <= 2.9.5.6 versions.
Quoted source text, attributed separately from HOL analysis.