CVE-2026-55501

🗓️ 10 Jul 2026 15:23:53Reported by GitHub_MType

cve🔗 web.nvd.nist.gov👁 29 Views🌐 WEB

Before 0.4.80, the login rate limiter uses a spoofable Forwarded For header, enabling brute-force attempts.

Reporter	Title	Published	Views	Family All 12
Circl	CVE-2026-55501	6 Jul 202622:35	–	circl
Cvelist	CVE-2026-55501 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	10 Jul 202615:23	–	cvelist
EUVD	EUVD-2026-42926	10 Jul 202615:23	–	euvd
Github Security Blog	9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	6 Jul 202621:46	–	github
GitLab Advisory Database	9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	6 Jul 202600:00	–	gitlab
NVD	CVE-2026-55501	10 Jul 202616:16	–	nvd
OSV	CVE-2026-55501 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	10 Jul 202615:23	–	osv
OSV	GHSA-7CFM-PQRJ-XGQ7 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	6 Jul 202621:46	–	osv
Patchstack	NPM: 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header	6 Jul 202621:46	–	patchstack
Positive Technologies	PT-2026-56084	6 Jul 202600:00	–	ptsecurity

Vulners

Node

decolua 9routerRange<0.4.80

[
  {
    "vendor": "decolua",
    "product": "9router",
    "versions": [
      {
        "version": "< 0.4.80",
        "status": "affected"
      }
    ]
  }
]

Source	Link
github	www.github.com/decolua/9router/releases/tag/v0.4.80
github	www.github.com/decolua/9router/commit/7648c3412b403a29f04967c4b4e9725e228791d4
github	www.github.com/decolua/9router/security/advisories/GHSA-7cfm-pqrj-xgq7

Parameter	Position	Path	Description	CWE
X-Forwarded-For	header	api/auth/login	Authentication rate limiter derives client identity from attacker-controlled X-Forwarded-For header, enabling rotation to bypass rate limits and perform unlimited brute-force attempts.	CWE-307

10 Jul 2026 17:25Current

6.2Medium risk

Vulners AI Score6.2

CVSS 3.17.3

EPSS0.0032

SSVC

CWE-307