CriticalFix available

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

Type: advisorySource: OSVRisk context updated1 source record

Announced 25 Jun 2026Source revision 2

CVE context updated. The publisher announcement is unchanged.

GO-2026-5236

Primary source · Revision 2

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GO-2026-5236

github.com/oauth2-proxy/oauth2-proxy

Source reference: /affected/0/package/name

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

github.com/oauth2-proxy/oauth2-proxy/v7

Source reference: /affected/1/package/name

Affected versions: Not stated in this record
Fixed versions: 7.15.2
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/oauth2-proxy/oauth2-proxy",
      "purl": "pkg:golang/github.com/oauth2-proxy/oauth2-proxy",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-5236.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "7.5.0"
          },
          {
            "fixed": "7.15.2"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/oauth2-proxy/oauth2-proxy/v7",
      "purl": "pkg:golang/github.com/oauth2-proxy/oauth2-proxy/v7",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-5236.json"
    },
    "ecosystem_specific": {}
  }
]