Technology · Go
github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 12 vulnerabilities in github.com/oauth2-proxy/oauth2-proxy (Go): 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-41059, was published on 22 April 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 2
- Exploited in the wild
- 0
About github.com/oauth2-proxy/oauth2-proxy (Go)
Reverse proxy for adding OAuth2 authentication to web applications and APIs.
Latest github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities
- CVE-2026-41059: OAuth2 Proxy has an Authentication Bypass via Fragment Confusion in skip_auth_routes and skip_auth_regexhighCVSS 8.2EPSS 0.3%
- CVE-2026-40575: OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofingcriticalCVSS 9.1EPSS 0.5%
- CVE-2026-40574: OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email ClaimsmediumCVSS 6.8EPSS 0.2%
- CVE-2026-34457: OAuth2 Proxy authentication bypass via health check User-Agent spoofingcriticalCVSS 9.1EPSS 0.7%
- CVE-2026-34454: OAuth2 Proxy insufficient session expiration in sign-in page handlerlowCVSS 3.5EPSS 0.2%
- CVE-2025-64484: OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalationlowCVSS 3.1EPSS 0.6%
- CVE-2025-54576: OAuth2-Proxy has authentication bypass in oauth2-proxy skip_auth_routes due to Query Parameter inclusionlowCVSS 3.1EPSS 1.2%
- CVE-2021-21411: OAuth2-Proxy's `--gitlab-group` GitLab Group Authorization config flag stopped working in v7.0.0lowCVSS 3.1EPSS 1.0%
- CVE-2021-21291: Subdomain checking of whitelisted domains could allow unintended redirects in oauth2-proxylowCVSS 3.1EPSS 1.6%
- CVE-2020-5233: The pattern '/\domain.com' is not disallowed when redirecting, allowing for open redirectlowCVSS 3.1EPSS 1.3%
- CVE-2020-11053: Open Redirect in OAuth2 ProxylowCVSS 3.1EPSS 0.8%
- CVE-2020-4037: Open Redirect in OAuth2 ProxylowCVSS 3.1EPSS 0.9%
Most severe github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-34457: OAuth2 Proxy authentication bypass via health check User-Agent spoofingcriticalCVSS 9.1EPSS 0.7%
- CVE-2026-40575: OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofingcriticalCVSS 9.1EPSS 0.5%
- CVE-2026-41059: OAuth2 Proxy has an Authentication Bypass via Fragment Confusion in skip_auth_routes and skip_auth_regexhighCVSS 8.2EPSS 0.3%
- CVE-2026-40574: OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email ClaimsmediumCVSS 6.8EPSS 0.2%
- CVE-2026-34454: OAuth2 Proxy insufficient session expiration in sign-in page handlerlowCVSS 3.5EPSS 0.2%
- CVE-2021-21291: Subdomain checking of whitelisted domains could allow unintended redirects in oauth2-proxylowCVSS 3.1EPSS 1.6%
- CVE-2020-5233: The pattern '/\domain.com' is not disallowed when redirecting, allowing for open redirectlowCVSS 3.1EPSS 1.3%
- CVE-2025-54576: OAuth2-Proxy has authentication bypass in oauth2-proxy skip_auth_routes due to Query Parameter inclusionlowCVSS 3.1EPSS 1.2%
- CVE-2021-21411: OAuth2-Proxy's `--gitlab-group` GitLab Group Authorization config flag stopped working in v7.0.0lowCVSS 3.1EPSS 1.0%
- CVE-2020-4037: Open Redirect in OAuth2 ProxylowCVSS 3.1EPSS 0.9%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy)<a href="https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy"><img src="https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy/badge.svg" alt="github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy.json, and this page as text at https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "github.com/oauth2-proxy/oauth2-proxy (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-oauth2-proxy-oauth2-proxy, 13 November 2026.