{"cve":"CVE-2021-22565","nvd":{"published":"2021-12-09T13:15:08.767","modified":"2026-06-17T03:37:26.193","status":"Modified","description":"An attacker could prematurely expire a verification code, making it unusable by the patient, making the patient unable to upload their TEKs to generate exposure notifications. We recommend upgrading the Exposure Notification server to V1.1.2 or greater.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","score":6.5},"cwes":["CWE-284"],"references":["https://github.com/google/exposure-notifications-verification-server/releases/tag/v1.1.2","https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-wx8q-rgfr-cf6v","https://github.com/google/exposure-notifications-verification-server/releases/tag/v1.1.2","https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-wx8q-rgfr-cf6v"],"products":["google:exposure_notification_verification_server"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-22565","score":0.0044,"percentile":0.3822,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-wx8q-rgfr-cf6v","url":"https://osv.dev/vulnerability/GHSA-wx8q-rgfr-cf6v","summary":"Insufficient Granularity of Access Control in github.com/google/exposure-notifications-verification-server","modified":"2026-07-08T06:27:48.613685541Z","packages":[{"ecosystem":"Go","name":"github.com/google/exposure-notifications-verification-server","purl":"pkg:golang/github.com/google/exposure-notifications-verification-server","ranges":["<1.1.2"],"fixed":["1.1.2"]}]},{"id":"GO-2022-0270","url":"https://osv.dev/vulnerability/GO-2022-0270","summary":"Insufficient Granularity of Access Control in github.com/google/exposure-notifications-verification-server","modified":"2026-03-03T04:52:05.161237Z","packages":[{"ecosystem":"Go","name":"github.com/google/exposure-notifications-verification-server","purl":"pkg:golang/github.com/google/exposure-notifications-verification-server","ranges":["<1.1.2"],"fixed":["1.1.2"]}]}],"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."]}