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CVE-2025-54576

35
FAUCET Score

CVE-2025-54576 describes a critical authentication bypass vulnerability in OAuth2-Proxy versions 7.10.0 and below. This flaw allows unauthenticated attackers to gain unauthorized access to protected resources by crafting URLs that exploit misconfigured regex patterns within the skip_auth_routes option. The vulnerability is rated 9.1 CRITICAL (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N), indicating it can be exploited remotely with low complexity, leading to high confidentiality and integrity impacts without user interaction. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, with 11 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.11.0CPE matchmatch criteria
cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0113 is in the 49th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/oauth2-proxy/oauth2-proxy/v7Fixed in: 7.11.0

Vendor Advisories (2)

goGHSA-7rh7-c77v-6434critical

OAuth2-Proxy has authentication bypass in oauth2-proxy skip_auth_routes due to Query Parameter inclusion

Jul 30, 2025
redhatCVE-2025-54576Important

github.com/oauth2-proxy/oauth2-proxy: OAuth2-Proxy authentication bypass

Jul 30, 2025

References

github.com / oauth2-proxy/oauth2-proxy/blob/f4b33b64bd66ad28e9b0d63bea51837b83c00ca1/oauthproxy.go
Product
github.com / oauth2-proxy/oauth2-proxy/blob/f4b33b64bd66ad28e9b0d63bea51837b83c00ca1/pkg/requests/util/util.go
Product
github.com / oauth2-proxy/oauth2-proxy/commit/9ffafad4b2d2f9f7668e5504565f356a7c047b77
Patch
github.com / oauth2-proxy/oauth2-proxy/releases/tag/v7.11.0
Release Notes
github.com / oauth2-proxy/oauth2-proxy/security/advisories/GHSA-7rh7-c77v-6434
ExploitMitigationVendor Advisory
oauth2-proxy.github.io / oauth2-proxy/configuration/overview
Product