{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-53471: Migration-planner: agent api ignores jwt source_id claim","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-53471","status":"final","version":"1","initial_release_date":"2026-06-10T13:55:41.253Z","current_release_date":"2026-06-10T16:02:20.123Z","revision_history":[{"date":"2026-06-10T13:55:41.253Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-53471 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-53471"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-53471"},{"category":"external","summary":"access.redhat.com","url":"https://access.redhat.com/security/cve/CVE-2026-53471"},{"category":"external","summary":"RHBZ#2487070","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487070"},{"category":"external","summary":"github.com","url":"https://github.com/kubev2v/migration-planner/pull/1213"}]},"product_tree":{"branches":[{"category":"vendor","name":"Unspecified vendor","branches":[{"category":"product_name","name":"Unspecified product","branches":[{"category":"product_version_range","name":"<0.13.5","product":{"name":"Unspecified product <0.13.5","product_id":"CSAFPID-1"}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-53471","title":"Migration-planner: agent api ignores jwt source_id claim","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","baseScore":9.6,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0.13.5.","product_ids":["CSAFPID-1"]}]}]}