CVE-2026-56682

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Source
https://cve.org/CVERecord?id=CVE-2026-56682
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56682.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56682
Aliases
Published
2026-09-22T16:09:07Z
Modified
2026-09-24T03:45:32Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-307",
        "CWE-807"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56682.json"
}
References

Affected packages

Git / github.com/decolua/9router

Affected ranges

Type
GIT
Repo
https://github.com/decolua/9router
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
efd20be8d81ef2e256a7037f3aa78e6b567b5fd3
Fixed
584cf66a70a99dd9b400cbfaf72b98066c4e633d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "0.5.6"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.2.21
v0.2.27
v0.2.31
v0.2.36
v0.2.43
v0.2.52
v0.2.56
v0.2.67
v0.2.70
v0.2.71
v0.2.79
v0.2.89
v0.3.17
v0.3.34
v0.3.42
v0.3.47
v0.3.75
v0.3.83
v0.3.86
v0.3.87
v0.3.89
v0.3.90
v0.3.91
v0.3.97
v0.3.98
v0.4.1
v0.4.10
v0.4.11
v0.4.12
v0.4.13
v0.4.14
v0.4.16
v0.4.18
v0.4.19
v0.4.2
v0.4.20
v0.4.25
v0.4.27
v0.4.28
v0.4.29
v0.4.3
v0.4.30
v0.4.31
v0.4.33
v0.4.36
v0.4.37
v0.4.38
v0.4.39
v0.4.4
v0.4.41
v0.4.44
v0.4.46
v0.4.49
v0.4.50
v0.4.52
v0.4.55
v0.4.58
v0.4.59
v0.4.6
v0.4.62
v0.4.63
v0.4.66
v0.4.71
v0.4.8
v0.4.80
v0.5.2
v0.5.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56682.json"