CVE-2026-90452

Summary

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 Software

VendorProductVersion RangeStatus
CISAMalcolm0 < v26.06.0affected
CISAMalcolmv26.06.0unaffected

Weaknesses

  • CWE-295: CWE-295 Improper certificate validation

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References