CVE-2026-53471: Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation

June 10, 2026 (updated August 14, 2026)

A flaw was found in migration-planner. The agent-API middleware processes JSON Web Tokens (JWTs) for authentication, but its UpdateSourceInventory and UpdateAgentStatus handlers fail to validate the source_id claim within these tokens against the requested source ID. This oversight allows an authenticated attacker with a valid agent token to manipulate data across different tenants, leading to a complete collapse of tenant isolation. This could result in unauthorized overwriting of victim inventory, planting of malicious credential URLs, or corruption of migration assessments.

References

Code Behaviors & Features

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