{"action":"Upgrade github.com/oauth2-proxy/oauth2-proxy/v7 to 7.15.2 or later.","affected":[{"fixed":"7.15.2","introduced":"0"}],"component":"github.com/oauth2-proxy/oauth2-proxy/v7","cve_ids":["CVE-2026-40574"],"ecosystem":"Go","epss":0.00209,"exploited":false,"fixed_versions":["7.15.2"],"ghsa_id":"GHSA-c5c4-8r6x-56w3","id":"tcs_01M5KF6RK02HE0WMTZZZ7D522Y","modified_at":"2026-07-21T13:56:41Z","published_at":"2026-04-15T19:23:54Z","references":["https://osv.dev/vulnerability/GHSA-c5c4-8r6x-56w3","https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-c5c4-8r6x-56w3","https://nvd.nist.gov/vuln/detail/CVE-2026-40574","https://github.com/oauth2-proxy/oauth2-proxy"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"GHSA-c5c4-8r6x-56w3","url":"https://osv.dev/vulnerability/GHSA-c5c4-8r6x-56w3"}],"summary":"OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims"}