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OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

Open an individual CVE identifier to page its complete risk history.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

20 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

9 Nov 2026 15:12:53 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

9 Nov 2026 09:15:34 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

7 Nov 2026 14:28:50 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

7 Nov 2026 08:37:41 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

5 Nov 2026 13:44:26 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

5 Nov 2026 08:05:35 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

3 Nov 2026 13:08:10 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

3 Nov 2026 07:10:53 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

1 Nov 2026 12:04:10 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

1 Nov 2026 06:16:51 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

30 Oct 2026 11:56:49 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

30 Oct 2026 06:01:00 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

28 Oct 2026 09:42:09 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

euvd · EUVD-2026-65061 · Published

28 Oct 2026 05:02:29 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

euvd · EUVD-2026-24557 · Published

25 Oct 2026 16:19:04 UTC

OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requ…

nvd · CVE-2026-76835 · Published

25 Oct 2026 09:17:30 UTC

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied `X-Forwarded-Uri` header when `--reverse-proxy` is enabled and `--skip-auth-regex` or `--skip-aut…

nvd · CVE-2026-40575 · Published

24 Oct 2026 13:19:41 UTC

OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing

osv · GHSA-7x63-xv5r-3p2x · Published

24 Oct 2026 13:19:41 UTC

OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing in github.com/oauth2-proxy/oauth2-proxy

osv · GO-2026-5236 · Published

23 Oct 2026 15:48:27 UTC

OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing

cve-program · CVE-2026-40575 · Published

23 Oct 2026 15:48:27 UTC

OAuth2 Proxy 7.15.2 through 7.15.4 Authentication Bypass via X-Forwarded-Uri Under the Default Trusted Proxy Set

cve-program · CVE-2026-76835 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 10 Nov 09:28 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current