CVE-2025-54576

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Source
https://cve.org/CVERecord?id=CVE-2025-54576
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54576.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-54576
Aliases
Downstream
Related
Published
2025-07-30T19:41:04Z
Modified
2026-08-12T03:51:28Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
OAuth2-Proxy has authentication bypass in oauth2-proxy skip_auth_routes due to Query Parameter inclusion
Details

OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware component integrated into existing reverse proxy or load balancer setups. In versions 7.10.0 and below, oauth2-proxy deployments are vulnerable when using the skip_auth_routes configuration option with regex patterns. Attackers can bypass authentication by crafting URLs with query parameters that satisfy configured regex patterns, allowing unauthorized access to protected resources. The issue stems from skip_auth_routes matching against the full request URI. Deployments using skip_auth_routes with regex patterns containing wildcards or broad matching patterns are most at risk. This issue is fixed in version 7.11.0. Workarounds include: auditing all skip_auth_routes configurations for overly permissive patterns, replacing wildcard patterns with exact path matches where possible, ensuring regex patterns are properly anchored (starting with ^ and ending with $), or implementing custom validation that strips query parameters before regex matching.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-290"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54576.json"
}
References

Affected packages

Git / github.com/oauth2-proxy/oauth2-proxy

Affected ranges

Type
GIT
Repo
https://github.com/oauth2-proxy/oauth2-proxy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c0a928ededa40391baeedf8c5f3e104c047bfb6e
Fixed
9ffafad4b2d2f9f7668e5504565f356a7c047b77
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.11.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.0
v1.1
v1.1.1
v2.*
v2.0
v2.0.1
v2.1
v2.2
v3.*
v3.0.0
v3.1.0
v3.2.0
v4.*
v4.0.0
v4.1.0
v5.*
v5.0.0
v5.1.0
v6.*
v6.0.0
v6.1.0
v6.1.1
v7.*
v7.0.0
v7.0.1
v7.1.0
v7.1.1
v7.1.2
v7.1.3
v7.10.0
v7.2.0
v7.2.1
v7.3.0
v7.4.0
v7.5.0
v7.5.1
v7.6.0
v7.7.0
v7.7.1
v7.8.0
v7.8.1
v7.8.2
v7.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54576.json"