CVE-2026-56679

HIGH

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

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v4 8.7
EPSS 0.0032
EPSS Percentile 24.9%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-915
Status published
Products (1)
decolua/9router < 0.5.4
Published Jul 15, 2026
Tracked Since Jul 16, 2026