Answer in brief
CVE-2026-15273 records a Medium severity (CVSS 6.4) vulnerability in Automatic.css 4.0.0 - Unauthenticated Stored Cross-Site Scripting via REQUEST_URI. The current sources do not mark it as known exploited. The current feed maps Automatic.css/Automatic.css (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.4. 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 Automatic.css/Automatic.css (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Automatic.css/Automatic.cssgeneric | 4.0.0 | Not reported |
Published upstream
Sep 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 26, 2026
The Automatic.css plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REQUEST_URI in all version 4.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute whenever an administrator accesses the Activity Log settings page.
Quoted source text, attributed separately from HOL analysis.