{"cve":"CVE-2026-40968","nvd":{"published":"2026-04-28T15:16:30.400","modified":"2026-10-26T20:10:00.160","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-653"],"references":["https://spring.io/security/cve-2026-40968"],"products":["vmware:spring_grpc"],"source":"nvd","synced_at":"2026-10-26T20:34:58.897451322+00:00"},"epss":{"cve":"CVE-2026-40968","score":0.00171,"percentile":0.06498,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-4g9c-3x4p-mfpp","url":"https://osv.dev/vulnerability/GHSA-4g9c-3x4p-mfpp","summary":"Spring gRPC SecurityContext leaks across requests upon authorization failure","modified":"2026-05-06T20:26:26.506854Z","packages":[{"ecosystem":"Maven","name":"org.springframework.grpc:spring-grpc","purl":"pkg:maven/org.springframework.grpc/spring-grpc","ranges":["<1.0.3"],"fixed":["1.0.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}