Vulnerability details
CVE-2026-55501
decolua 9Router
9router: Login brute-force protection bypass via spoofed X-Forwarded-For header
CVSS 3.1
7.3High
Official description
9Router is an AI router & token saver. Prior to 0.4.80, the dashboard login rate limiter in src/lib/auth/loginLimiter.js derives the client identity from the attacker-controlled X-Forwarded-For HTTP header, and src/app/api/auth/login/route.js uses that spoofable value for checkLock and recordFail. A remote attacker can rotate the X-Forwarded-For value on each login attempt to receive a fresh rate-limit bucket, bypass the 5-attempt threshold and progressive lockout durations, and perform unlimited brute-force attempts against the dashboard password. This issue is fixed in version 0.4.80.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.3High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| decolua | 9Router | < 0.4.80 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/decolua/9router/commit/7648c3412b403a29f04967c4b4e9725e228791d4 x_refsource_MISC
- https://github.com/decolua/9router/releases/tag/v0.4.80 x_refsource_MISC
- https://github.com/decolua/9router/security/advisories/GHSA-7cfm-pqrj-xgq7 x_refsource_CONFIRM
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Details
- Published
- 2026-07-10
- Last updated
- 2026-07-10
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.37%
Probability of exploitation in 30 days
32%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-307Improper Restriction of Excessive Authentication Attempts