PatchTheCVEworkers-oauth-provider vulnerabilities and fixes
Recent CVEs affecting workers-oauth-provider, with upgrade or downgrade steps. 2 tracked.
Also searched as: workers oauth provider.
workers-oauth-provider has 2 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 0. Most recent: 2025-05-01. Highest priority: CVE-2025-4144 (score 51/100).
- CVE-2025-4144 CRITICAL 9.8 DOWNGRADE PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework http
- CVE-2025-4143 MEDIUM 6.1 DOWNGRADE The OAuth implementation in workers-oauth-provider that is part of MCP framework https://github.com/cloudflar
FAQ
How do I fix workers-oauth-provider vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is workers-oauth-provider being exploited right now?
None of the tracked workers-oauth-provider CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which workers-oauth-provider CVE should I patch first?
CVE-2025-4144 currently ranks highest (51/100): PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework http.