{"schema_version":1,"title":"OAuth2 Proxy vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in OAuth2 Proxy: 0 in the last 7 days and 1 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-76835, was published on 24 August 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/oauth2-proxy","json_url":"https://junglewise.ai/threats/vendors/oauth2-proxy.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/oauth2-proxy","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":0,"all_time":4,"critical":3,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-76835","cvss":9.1,"epss":0.0063,"slug":"cve-2026-76835-oauth2-proxy-authentication-bypass-via-spoofed-x-forwarded-uri","title":"OAuth2 Proxy authentication bypass via spoofed X-Forwarded-Uri header","severity":"critical","exploited":false,"published_at":"2026-08-24T18:17:21.57+00:00","url":"https://junglewise.ai/threats/cve-2026-76835-oauth2-proxy-authentication-bypass-via-spoofed-x-forwarded-uri"},{"cve":"CVE-2026-40575","cvss":9.1,"epss":0.0048,"slug":"cve-2026-40575-oauth2-proxy-authentication-bypass-via-x-forwarded-uri-spoofing","title":"OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofing","severity":"critical","exploited":false,"published_at":"2026-04-22T00:16:27.817+00:00","url":"https://junglewise.ai/threats/cve-2026-40575-oauth2-proxy-authentication-bypass-via-x-forwarded-uri-spoofing"},{"cve":"CVE-2026-34457","cvss":9.1,"epss":0.0066,"slug":"cve-2026-34457-oauth2-proxy-authentication-bypass-via-health-check-user-agent","title":"OAuth2 Proxy authentication bypass via health check User-Agent spoofing","severity":"critical","exploited":false,"published_at":"2026-04-14T23:16:28.33+00:00","url":"https://junglewise.ai/threats/cve-2026-34457-oauth2-proxy-authentication-bypass-via-health-check-user-agent"},{"cve":"CVE-2026-34454","cvss":3.5,"epss":0.0022,"slug":"cve-2026-34454-oauth2-proxy-insufficient-session-expiration-in-sign-in-page","title":"OAuth2 Proxy insufficient session expiration in sign-in page handler","severity":"low","exploited":false,"published_at":"2026-04-14T23:16:28.167+00:00","url":"https://junglewise.ai/threats/cve-2026-34454-oauth2-proxy-insufficient-session-expiration-in-sign-in-page"}],"vendor":{"hub":true,"name":"OAuth2 Proxy","slug":"oauth2-proxy","homepage":"https://oauth2-proxy.github.io/oauth2-proxy/","description":"An open-source project providing a reverse proxy and static file server that provides authentication using Providers to validate accounts by email, domain or group.","url":"https://junglewise.ai/threats/vendors/oauth2-proxy"},"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":1,"exploited":0,"vulnerabilities":1},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-34457","cvss":9.1,"epss":0.0066,"slug":"cve-2026-34457-oauth2-proxy-authentication-bypass-via-health-check-user-agent","title":"OAuth2 Proxy authentication bypass via health check User-Agent spoofing","severity":"critical","exploited":false,"published_at":"2026-04-14T23:16:28.33+00:00","url":"https://junglewise.ai/threats/cve-2026-34457-oauth2-proxy-authentication-bypass-via-health-check-user-agent"},{"cve":"CVE-2026-76835","cvss":9.1,"epss":0.0063,"slug":"cve-2026-76835-oauth2-proxy-authentication-bypass-via-spoofed-x-forwarded-uri","title":"OAuth2 Proxy authentication bypass via spoofed X-Forwarded-Uri header","severity":"critical","exploited":false,"published_at":"2026-08-24T18:17:21.57+00:00","url":"https://junglewise.ai/threats/cve-2026-76835-oauth2-proxy-authentication-bypass-via-spoofed-x-forwarded-uri"},{"cve":"CVE-2026-40575","cvss":9.1,"epss":0.0048,"slug":"cve-2026-40575-oauth2-proxy-authentication-bypass-via-x-forwarded-uri-spoofing","title":"OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofing","severity":"critical","exploited":false,"published_at":"2026-04-22T00:16:27.817+00:00","url":"https://junglewise.ai/threats/cve-2026-40575-oauth2-proxy-authentication-bypass-via-x-forwarded-uri-spoofing"},{"cve":"CVE-2026-34454","cvss":3.5,"epss":0.0022,"slug":"cve-2026-34454-oauth2-proxy-insufficient-session-expiration-in-sign-in-page","title":"OAuth2 Proxy insufficient session expiration in sign-in page handler","severity":"low","exploited":false,"published_at":"2026-04-14T23:16:28.167+00:00","url":"https://junglewise.ai/threats/cve-2026-34454-oauth2-proxy-insufficient-session-expiration-in-sign-in-page"}],"generated_at":"2026-09-26T15:07:00.181821+00:00","technologies":[{"name":"OAuth2 Proxy","slug":"oauth2-proxy","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/oauth2-proxy"}]}