CVE-2026-90452

published 2026-09-11

CVE-2026-90452: Requests from the reverse proxy to the identity-provider service for token discovery, introspection, and credential exchange do not verify the identity…

Priority P4 27 medium 6 CVSS 4.0

AV A AC H AT N PR N UI N VC N VI H VA N 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

Requests from the reverse proxy to the identity-provider service for token discovery, introspection, and credential exchange do not verify the identity provider's server certificate. An attacker positioned on the network path between the proxy and the identity provider could impersonate the identity provider and issue forged authentication tokens accepted by the deployment.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
cisa	malcolm	< v26.06.0	v26.06.0

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CWE-295