CVE-2026-56675
HIGH9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs
Title source: cnaDescription
9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/decolua/9router/security/advisories/GHSA-x5c9-v98j-722r
X_Refsource_Misc x_refsource_misc
https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc
X_Refsource_Misc x_refsource_misc
https://github.com/decolua/9router/releases/tag/v0.5.2
Scores
CVSS v3
8.3
EPSS
0.0032
EPSS Percentile
23.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-287
CWE-290
CWE-306
CWE-441
Status
published
Products (1)
decolua/9router
< 0.5.2
Published
Jul 10, 2026
Tracked Since
Jul 10, 2026