{"id":"GHSA-2fqw-7c6r-2cq6","summary":"Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation","details":"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.","aliases":["CVE-2026-53471","GO-2026-6228"],"modified":"2026-08-18T15:11:00.307195777Z","published":"2026-06-10T15:31:33Z","database_specific":{"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-08-14T15:38:07Z","nvd_published_at":"2026-06-10T15:16:41Z","cwe_ids":["CWE-639"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53471"},{"type":"WEB","url":"https://github.com/kubev2v/migration-planner/pull/1213"},{"type":"WEB","url":"https://github.com/kubev2v/migration-planner/commit/fd21a239216f5eeec635d16c72be9c033bd5d1aa"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-53471"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487070"},{"type":"PACKAGE","url":"https://github.com/kubev2v/migration-planner"}],"affected":[{"package":{"name":"github.com/kubev2v/migration-planner","ecosystem":"Go","purl":"pkg:golang/github.com/kubev2v/migration-planner"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.13.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-2fqw-7c6r-2cq6/GHSA-2fqw-7c6r-2cq6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"}]}