Technology · OAuth2 Proxy
OAuth2 Proxy vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 3
- Exploited in the wild
- 0
About OAuth2 Proxy
A reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others) to validate accounts by email, domain or group.
Latest OAuth2 Proxy vulnerabilities
- CVE-2026-76835: OAuth2 Proxy authentication bypass via spoofed X-Forwarded-Uri headercriticalCVSS 9.1EPSS 0.6%
- CVE-2026-40575: OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofingcriticalCVSS 9.1EPSS 0.5%
- 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%
Most severe OAuth2 Proxy 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-2026-76835: OAuth2 Proxy authentication bypass via spoofed X-Forwarded-Uri headercriticalCVSS 9.1EPSS 0.6%
- CVE-2026-40575: OAuth2 Proxy authentication bypass via X-Forwarded-Uri spoofingcriticalCVSS 9.1EPSS 0.5%
- CVE-2026-34454: OAuth2 Proxy insufficient session expiration in sign-in page handlerlowCVSS 3.5EPSS 0.2%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 1 | 1 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
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/oauth2-proxy.json, 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, "OAuth2 Proxy vulnerabilities", https://junglewise.ai/threats/technologies/oauth2-proxy, 26 September 2026.