{"id":"CVE-2026-53471","aliases":["GHSA-2fqw-7c6r-2cq6"],"title":"Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation","summary":"Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","vendor":"kubev2v","product":"github.com/kubev2v/migration-planner","ecosystem":"go","affected":["github.com/kubev2v/migration-planner < 0.13.5"],"patched":["github.com/kubev2v/migration-planner 0.13.5"],"published":"2026-06-10","updated":"2026-08-14","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-2fqw-7c6r-2cq6","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53471"},{"url":"https://github.com/kubev2v/migration-planner/pull/1213"},{"url":"https://github.com/kubev2v/migration-planner/commit/fd21a239216f5eeec635d16c72be9c033bd5d1aa"},{"url":"https://access.redhat.com/security/cve/CVE-2026-53471"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487070"},{"url":"https://github.com/kubev2v/migration-planner"}],"tags":["osv","go"],"epss":0.00287,"epssPercentile":0.21449,"ingestedAt":"2026-08-14T19:18:45.876Z","slug":"CVE-2026-53471","body":"## Overview\n\nA 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.\n\n## Affected packages\n\n- `github.com/kubev2v/migration-planner < 0.13.5`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/kubev2v/migration-planner 0.13.5`","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}