{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40968", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-16T02:18:56.133Z", "datePublished": "2026-04-28T13:42:35.525Z", "dateUpdated": "2026-04-28T14:36:35.953Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-04-28T13:42:35.525Z"}, "title": "Spring gRPC SecurityContext leaks across requests on authorization failure", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-653", "description": "CWE-653: Improper Isolation or Compartmentalization", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "A subsequent request on the same gRPC worker thread may inherit a prior user\u2019s authenticated identity after an authorization failure, enabling privilege escalation (CVSS v3.1: low confidentiality and integrity impact)."}]}], "affected": [{"vendor": "Spring", "product": "Spring gRPC", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.0.3", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions.\n\nAffected versions:\nSpring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions.<br><br>Affected versions:<br>Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected."}]}], "references": [{"url": "https://spring.io/security/cve-2026-40968"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 4.3, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"}}], "source": {"discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-28T14:36:11.607363Z", "id": "CVE-2026-40968", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-28T14:36:35.953Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40968", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-16T02:18:56.133Z", "datePublished": "2026-04-28T13:42:35.525Z", "dateUpdated": "2026-04-28T14:36:35.953Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-04-28T13:42:35.525Z"}, "title": "Spring gRPC SecurityContext leaks across requests on authorization failure", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-653", "description": "CWE-653: Improper Isolation or Compartmentalization", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "A subsequent request on the same gRPC worker thread may inherit a prior user\u2019s authenticated identity after an authorization failure, enabling privilege escalation (CVSS v3.1: low confidentiality and integrity impact)."}]}], "affected": [{"vendor": "Spring", "product": "Spring gRPC", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.0.3", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions.\n\nAffected versions:\nSpring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions.<br><br>Affected versions:<br>Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected."}]}], "references": [{"url": "https://spring.io/security/cve-2026-40968"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 4.3, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"}}], "source": {"discovery": "UNKNOWN"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-40968", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-28T14:36:11.607363Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-28T14:36:28.833Z"}}]}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:vmware:spring_grpc:*:*:*:*:*:*:*:*", "matchCriteriaId": "4B816748-EE94-4935-A81F-E9542FB2E3D2", "versionEndExcluding": "1.0.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions.\n\nAffected versions:\nSpring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected."}], "id": "CVE-2026-40968", "lastModified": "2026-04-30T13:32:58.017", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "security@vmware.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-04-28T15:16:30.400", "references": [{"source": "security@vmware.com", "tags": ["Vendor Advisory"], "url": "https://spring.io/security/cve-2026-40968"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-653"}], "source": "security@vmware.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,1.0.3)"}}], "enrichment": {"confidence": 84.0, "confidence_source": "matching", "scores": [{"score": 84.0, "source": "matching"}]}, "original": {"product": "Spring gRPC", "source": "cna", "vendor": "Spring"}, "product": "spring", "vendor": "spring"}], "created": "2026-04-28T23:30:06.094390+00:00", "updated": "2026-04-29T10:00:09.476037+00:00", "vendors": ["spring", "spring$PRODUCT$spring"]}