{"schema_version":"1.3.1","id":"GO-2025-4113","modified":"2025-11-17T19:11:23Z","published":"2025-11-17T19:11:23Z","aliases":["CVE-2025-64484","GHSA-vjrc-mh2v-45x6"],"summary":"OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation in github.com/oauth2-proxy/oauth2-proxy","details":"OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation 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":"7.13.0"}]}],"ecosystem_specific":{}}],"references":[{"type":"ADVISORY","url":"https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-vjrc-mh2v-45x6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64484"},{"type":"FIX","url":"https://github.com/oauth2-proxy/oauth2-proxy/commit/f3f30fa976fb4bb97d6345ba4735cb6d86e24f95"},{"type":"WEB","url":"https://datatracker.ietf.org/doc/html/rfc2616#section-4.2"},{"type":"WEB","url":"https://datatracker.ietf.org/doc/html/rfc822#section-3.2"},{"type":"WEB","url":"https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.13.0"},{"type":"WEB","url":"https://github.security.telekom.com/2020/05/smuggling-http-headers-through-reverse-proxies.html"},{"type":"WEB","url":"https://www.uptimia.com/questions/why-are-http-headers-with-underscores-dropped-by-nginx"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2025-4113","review_status":"UNREVIEWED"}}