9Router: Hardcoded Default fallback JWT Secret Allows Authentication Bypass

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-49352
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 21:16:53 UTC
Updated2026-07-16 19:16:49 UTC
Description9Router is an AI router & token saver. From 0.2.21 until 0.4.44, 9Router used the hardcoded fallback JWT secret 9router-default-secret-change-me in src/app/api/auth/login/route.js, src/middleware.js, and later src/lib/auth/dashboardSession.js, allowing attackers to forge an auth_token cookie when JWT_SECRET was unset. This issue is fixed in version 0.4.44

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.006010000 probability, percentile 0.448610000 (date 2026-07-20)

Problem Types: CWE-798 | CWE-798 CWE-798: Use of Hard-coded Credentials

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Decolua 9router affected >= 0.2.21, < 0.4.44 Not specified

References

ReferenceSourceLinkTags
github.com/decolua/9router/releases/tag/v0.4.44 [email protected] github.com
github.com/decolua/9router/security/advisories/GHSA-jphh-m39h-6gwx 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/decolua/9router/commit/fe3ce25ae3cda48c0702c2d452e17f6ec214009d [email protected] github.com
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