Answer in brief
CVE-2026-86709 records a Critical severity (CVSS 9.8) vulnerability in The Pressengine <= 1.0 - Unauthenticated Authentication Bypass. The current sources do not mark it as known exploited. The current feed maps Unknown/The Pressengine (generic), Unknown/The Pressengine (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 9.8. 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 Unknown/The Pressengine (generic), Unknown/The Pressengine (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/The Pressenginegeneric | 0 | Not reported |
| Unknown/The Pressenginegeneric | >=0 <=1.0 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
The Pressengine WordPress plugin through 1.0 does not stop its login handler from issuing a session when authentication fails, allowing unauthenticated attackers to log in as any user, including administrators.
Quoted source text, attributed separately from HOL analysis.