CVE-2025-54576

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 33% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
—
EPSS
63.1%
KEV
Not listed

Published

July 30, 2025

Last Modified

September 10, 2025

Advisory Details (6)

Auto-updated Jul 21, 2026
Patch available. Sources: github_commit, github_release, github.
generic

Overview | OAuth2 Proxy

https://oauth2-proxy.github.io/oauth2-proxy/configuration/overview/#proxy-options
github Patch Available

Authentication bypass in oauth2-proxy skip_auth_routes due to Query Parameter inclusion · Advisory · oauth2-proxy/oauth2-proxy · GitHub

https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-7rh7-c77v-6434
github_release Patch Available

v7.11.0

Patch available: oauth2-proxy/oauth2-proxy v7.11.0

https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.11.0
github_commit

commit 9ffafad4b2d2 (oauth2-proxy/oauth2-proxy)

Fix landed in oauth2-proxy/oauth2-proxy commit 9ffafad4b2d2 — awaiting tagged release

https://github.com/oauth2-proxy/oauth2-proxy/commit/9ffafad4b2d2f9f7668e5504565f356a7c047b77
generic

oauth2-proxy/pkg/requests/util/util.go at f4b33b64bd66ad28e9b0d63bea51837b83c00ca1 · oauth2-proxy/oauth2-proxy · GitHub

https://github.com/oauth2-proxy/oauth2-proxy/blob/f4b33b64bd66ad28e9b0d63bea51837b83c00ca1/pkg/requests/util/util.go#L37-L44
generic

oauth2-proxy/oauthproxy.go at f4b33b64bd66ad28e9b0d63bea51837b83c00ca1 · oauth2-proxy/oauth2-proxy · GitHub

https://github.com/oauth2-proxy/oauth2-proxy/blob/f4b33b64bd66ad28e9b0d63bea51837b83c00ca1/oauthproxy.go#L582-L584

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/oauth2-proxy/oauth2-proxy———
github.com/oauth2-proxy/oauth2-proxy/v7—7.11.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
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  20. 2026-07-09 19:09 UTCEPSS rescore
  21. 2026-07-08 15:15 UTCEPSS rescore
  22. 2026-07-07 13:45 UTCEPSS rescore
  23. 2026-07-06 17:51 UTCOSV refresh
  24. 2026-07-06 16:27 UTCEPSS rescore
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  1. 2026-07-06 02:23 UTCEPSS rescore
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  5. 2026-07-02 17:01 UTCEPSS rescore
  6. 2026-07-01 15:06 UTCEPSS rescore
  7. 2026-06-30 23:22 UTCEPSS rescore
  8. 2026-06-28 14:07 UTCEPSS rescore
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  10. 2026-06-28 04:55 UTCEPSS rescore
  11. 2026-06-27 03:08 UTCEPSS rescore
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  18. 2026-06-21 14:56 UTCEPSS rescore
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  20. 2026-06-21 01:59 UTCEPSS rescore
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  22. 2026-06-19 19:25 UTCEPSS rescore
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  24. 2026-06-18 17:52 UTCEPSS rescore
  25. 2026-06-18 17:52 UTCEPSS rescore
  26. 2026-06-18 06:13 UTCOSV refresh
  27. 2026-06-17 17:52 UTCEPSS rescore
  28. 2026-06-16 17:52 UTCEPSS rescore
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  30. 2026-06-15 17:48 UTCEPSS rescore
  31. 2026-06-14 23:17 UTCEPSS rescore
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  36. 2026-06-10 22:18 UTCEPSS rescore
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  38. 2026-06-10 13:22 UTCEPSS rescore
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  40. 2026-06-08 14:16 UTCEPSS rescore
  41. 2026-06-08 14:16 UTCEPSS rescore
  42. 2026-06-07 15:24 UTCEPSS rescore
  43. 2026-06-07 15:24 UTCEPSS rescore
  44. 2026-06-06 13:47 UTCEPSS rescore
  45. 2026-06-06 13:47 UTCEPSS rescore
  46. 2026-06-05 22:46 UTCEPSS rescore
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  48. 2026-06-05 06:10 UTCEPSS rescore
  49. 2026-06-05 06:10 UTCEPSS rescore
  50. 2026-06-04 13:12 UTCEPSS rescore
  51. 2026-06-04 13:12 UTCEPSS rescore
  52. 2026-06-02 20:12 UTCEPSS rescore
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  54. 2026-06-01 13:51 UTCEPSS rescore
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  56. 2026-05-31 22:30 UTCEPSS rescore
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  58. 2026-05-31 00:16 UTCEPSS rescore
  59. 2026-05-31 00:16 UTCEPSS rescore
  60. 2026-05-30 01:05 UTCEG score recompute
  61. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-54576?
CVE-2025-54576 is a critical vulnerability published on July 30, 2025. 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 skipauthroutes configuration option…
When was CVE-2025-54576 disclosed?
CVE-2025-54576 was first published in the National Vulnerability Database on July 30, 2025, with the most recent update on September 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-54576 actively exploited?
CVE-2025-54576 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-54576?
CVE-2025-54576 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2025-54576?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-54576, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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