{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78426", "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "state": "PUBLISHED", "assignerShortName": "suse", "dateReserved": "2026-08-24T15:33:13.665Z", "datePublished": "2026-09-17T09:28:19.683Z", "dateUpdated": "2026-09-17T09:28:19.683Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "shortName": "suse", "dateUpdated": "2026-09-17T09:28:19.683Z"}, "title": "Logout bypass via alternate JWT spelling", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "type": "CWE"}]}], "affected": [{"vendor": "go", "product": "neuvector", "packageName": "neuvector", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "v5.6.1", "changes": [{"at": "5.6.2", "status": "unaffected"}, {"at": "5.5.4", "status": "unaffected"}, {"at": "5.4.11", "status": "unaffected"}], "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p><span>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.</span></p>"}]}], "references": [{"url": "https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54j"}, {"url": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "LOW", "baseScore": 3.7, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "neuvector", "product": "neuvector", "vendor": "go", "versions": [{"changes": [{"at": "5.6.2", "status": "unaffected"}, {"at": "5.5.4", "status": "unaffected"}, {"at": "5.4.11", "status": "unaffected"}], "lessThanOrEqual": "v5.6.1", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "meissner@suse.de"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-78426", "lastModified": "2026-09-17T10:17:03.520", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 2.5, "source": "meissner@suse.de", "type": "Secondary"}]}, "published": "2026-09-17T10:17:03.520", "references": [{"source": "meissner@suse.de", "url": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426"}, {"source": "meissner@suse.de", "url": "https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54j"}], "sourceIdentifier": "meissner@suse.de", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "meissner@suse.de", "type": "Primary"}]}

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