{"cve":"CVE-2026-40969","nvd":{"published":"2026-04-28T15:16:30.560","modified":"2026-10-26T00:10:00.150","status":"Analyzed","description":"The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks.\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:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-209"],"references":["https://spring.io/security/cve-2026-40969"],"products":["vmware:spring_grpc"],"source":"nvd","synced_at":"2026-10-26T00:31:35.753532240+00:00"},"epss":{"cve":"CVE-2026-40969","score":0.002,"percentile":0.098,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-37w2-q6vh-45v6","url":"https://osv.dev/vulnerability/GHSA-37w2-q6vh-45v6","summary":"Spring gRPC AuthenticationException messages are reflected to remote client","modified":"2026-05-06T20:26:26.424687Z","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."]}