CVE-2026-90447
A routing rule selects between two different authentication mechanisms for the same downstream service based on the value of a client-supplied request header, rather than on any property the client cannot control. An authenticated user in possession of a shared service credential can set this header to route around the primary role-based authorization check and reach the alternate path's fixed, elevated role instead. This allows a low-privileged authenticated attacker who knows the shared credential to perform actions reserved for a higher-privileged role.
- Published Sep 11, 2026
- CVSS 7.1 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
Affected software
In the news
- CISA Malcolm CISA ·