CVE-2026-56679 PUBLISHED

9Router: Mass assignment in PATCH /api/settings allows authenticated authorization downgrade

Assigner: GitHub_M
Reserved: 22.06.2026 Published: 15.07.2026 Updated: 16.07.2026

9Router is an AI router & token saver. Prior to 0.5.4, the PATCH /api/settings endpoint writes the entire request body to persistent settings without a field whitelist, allowing an authenticated user to set security-critical fields such as requireLogin and disable authentication for the whole application, exposing protected routes such as /api/keys and /api/providers to unauthenticated access. This issue is reported as fixed in version 0.5.4.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS Score: 8.7

Product Status

Vendor decolua
Product 9router
Versions
  • Version < 0.5.4 is affected

References

Problem Types

  • CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes CWE