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.
CVE-2026-56682
MEDIUMPre-NVD 5.35.3—Trending — 3 sources updated this weekElevated
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 58% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 55(Attend)EG Risk 55/100SSVC: Attend
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity53% × 45%Exploitation40% × 40%Automatability100% × 15%Action: Remediate soon — notable exploitation risk. - EPSS PROB
- 0%
- EPSS %ILE
- 42%
- KEV
- Not listed
Published
September 22, 2026
Last Modified
September 22, 2026
Advisory Details (3)
Auto-updated Sep 22, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
feat: Ponytail code gen, Headroom proxy, CodeBuddy CN provider version 0.5.6
Patch available: decolua/9router v0.5.6
https://github.com/decolua/9router/releases/tag/v0.5.6github_commit Patch Available
commit efd20be8d81e (decolua/9router)
Patch available: decolua/9router v0.5.6 (contains commit efd20be8d81e)
https://github.com/decolua/9router/commit/efd20be8d81ef2e256a7037f3aa78e6b567b5fd3github Patch Available🟡 PoC Available
Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header (9router) · Advisory · decolua/9router · GitHub
https://github.com/decolua/9router/security/advisories/GHSA-32gc-64m7-hj7vVendor Advisories for CVE-2026-56682(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| 9router | — | 0.5.8 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-23 19:06 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-22 18:33 UTCEG score recompute
- 2026-09-22 17:37 UTCEG score recompute
- 2026-09-22 16:25 UTCEG score recompute
- 2026-09-22 16:24 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-807 · CWE-307
Frequently asked(5)
What is CVE-2026-56682?
CVE-2026-56682 is a medium vulnerability published on September 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…
When was CVE-2026-56682 disclosed?
CVE-2026-56682 was first published in the National Vulnerability Database on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56682 actively exploited?
CVE-2026-56682 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 58.2% of all scored CVEs.
What is the CVSS score of CVE-2026-56682?
CVE-2026-56682 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-56682?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56682, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56682
Is Your Infrastructure Affected by CVE-2026-56682?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.