{"schema_version":"1.3.1","id":"GO-2026-5314","modified":"2026-06-25T18:43:19Z","published":"2026-06-25T18:43:19Z","aliases":["CVE-2026-40574","GHSA-c5c4-8r6x-56w3"],"summary":"OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims in github.com/oauth2-proxy/oauth2-proxy","details":"OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims in github.com/oauth2-proxy/oauth2-proxy","affected":[{"package":{"name":"github.com/oauth2-proxy/oauth2-proxy","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{}},{"package":{"name":"github.com/oauth2-proxy/oauth2-proxy/v7","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.15.2"}]}],"ecosystem_specific":{}}],"references":[{"type":"ADVISORY","url":"https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-c5c4-8r6x-56w3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40574"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-5314","review_status":"UNREVIEWED"}}