{"id":"CVE-2026-78426","summary":"Logout bypass via alternate JWT spelling","details":"The NeuVector JWT verifier accepts noncanonical Base64URL encodings of the same RSA signature field. An attacker holding a valid JWT that has not expired, but was logged out of NeuVector, can continue using the non-expired token with equivalent spelling of the RSA signature field until the token validity expires.","aliases":["GHSA-wcx5-mq6c-c54j"],"modified":"2026-09-20T11:30:57.594158061Z","published":"2026-09-17T09:28:19.683Z","database_specific":{"cna_assigner":"suse","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78426.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78426.json"},{"type":"ADVISORY","url":"https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78426"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/neuvector/neuvector","events":[{"introduced":"0"},{"last_affected":"c13b2f609e6c04276994439d60072caeb0dcf3d9"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"v5.6.1"}],"source":"AFFECTED_FIELD"}}],"versions":["v5.6.1-rc4","v5.6.1-rc3","v5.6.1","v5.6.0-rc4","v5.6.0","v5.6.0-rc3","v5.6.0-rc1","controller/k8sapi/v1.0.0","v5.4.9","v5.5.1-rc4","v5.5.1-rc3","v5.5.1-rc2","v5.5.0-rc4","v5.5.0-rc3","v5.5.0","v5.5.0-rc2","v5.5.0-rc1","v5.4.9-rc3","v5.4.9-rc2","v5.4.9-rc1","v5.4.8","v5.4.8-rc3","v5.4.8-rc2","v5.4.8-rc1","v5.4.7-rc2","v5.4.7-rc1","v5.4.6-rc1","v5.4.5-rc2","v5.4.5","v5.4.4-rc2","v5.4.4","v5.4.5-rc1","v5.4.4-rc1","v5.4.3-rc2","v5.4.3-rc1","v5.4.1-alpha","v5.4.0-b3","v5.4.0-b2-alpine","v5.4.0-b2","v5.4.0-b1-bci","v5.4.0-b1","voc415.1","v5.3.3-b1","v5.3.1-b1","v5.3.0-b3","v5.3.0-b2","v5.3.0-b1","v5.2.2-b2","v5.2.2-b1","v8040.1","vlogvul.1","v5.2.0-s1","v5.2.0","v5.2.0-b1","vnsprune.1","v5.1.1","v5.1.1-b1","v5.1.0-rc1","vcilium.1","veg.1","v5.0.0-b2","v5.0.0-b1","v5.0.0-preview.3","v5.0.0-preview.2","v5.0.0-preview.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78426.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"}]}