Answer in brief
CVE-2026-56682 records a Medium severity (CVSS 5.3) vulnerability in 9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header. The current sources do not mark it as known exploited. The current feed maps decolua/9router (generic), 9router (npm), 9router (npm). 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 5.3. 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 decolua/9router (generic), 9router (npm), 9router (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| decolua/9routergeneric | <0.5.6 | 0.5.6 |
| 9routernpm | <=0.5.4 | 0.5.8 |
| 9routernpm | >=0 <0.5.8 | 0.5.8 |
Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 22, 2026
9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper use the client-supplied X-9r-Real-Ip value as the bucket key in getClientIp, checkLock, and recordFail in src/lib/auth/loginLimiter.js for POST /api/auth/login. A remote unauthenticated attacker can rotate the header on every password guess so each request uses a new failed-attempt bucket and the five-attempt progressive lockout never returns HTTP 429. This permits unthrottled password guessing against the dashboard login and can lead to an administrative session if the password is recovered. This issue is fixed in version 0.5.6.
Quoted source text, attributed separately from HOL analysis.