https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 00:28:56 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-280217 EUVD-2026-280217 https://cve.radiocsirt.org/vuln/euvd-2026-280217 https://cve.radiocsirt.org/vuln/fkie_cve-2026-33544 <p>Tinyauth is an authentication and authorization server. Prior to version 5.0.5, all three OAuth service implementations (GenericOAuthService, GithubOAuthService, GoogleOAuthService) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between VerifyCode() and Userinfo() causes one user to receive a session with the other user&#39;s identity. This issue has been patched in version 5.0.5.</p> <p>Tinyauth is an authentication and authorization server. Prior to version 5.0.5, all three OAuth service implementations (GenericOAuthService, GithubOAuthService, GoogleOAuthService) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between VerifyCode() and Userinfo() causes one user to receive a session with the other user&#39;s identity. This issue has been patched in version 5.0.5.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-33544 https://cve.radiocsirt.org/vuln/ghsa-9q5m-jfc4-wc92 <p><strong>Affected:</strong> Go: github.com/steveiliop56/tinyauth</p> <p>### Summary</p> <p>All three OAuth service implementations (`GenericOAuthService`, `GithubOAuthService`, `GoogleOAuthService`) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between `VerifyCode()` and `Userinfo()` causes one user to receive a session with the other user&#39;s identity.</p> <p>### Details</p> <p>The [`OAuthBrokerService.GetService()`](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/oauth_broker_service.go#L70-L72) returns a single shared instance per provider for every request. The OAuth flow stores intermediate state as struct fields on this singleton:</p> <p>**Token storage** — [`generic_oauth_service.go` line 96](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/generic_oauth_service.go#L96): ```go generic.token = token // Shared mutable field on singleton ```</p> <p>**Verifier storage** — [`generic_oauth_service.go` line 81](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/generic_oauth_service.go#L81): ```go generic.verifier = verifier // Shared mutable field on singleton ```</p> <p>In the callback handler [`oauth_controller.go` lines 136–143](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/controller/oauth_controller…</p> <p><strong>Affected:</strong> Go: github.com/steveiliop56/tinyauth</p> <p>### Summary</p> <p>All three OAuth service implementations (`GenericOAuthService`, `GithubOAuthService`, `GoogleOAuthService`) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between `VerifyCode()` and `Userinfo()` causes one user to receive a session with the other user&#39;s identity.</p> <p>### Details</p> <p>The [`OAuthBrokerService.GetService()`](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/oauth_broker_service.go#L70-L72) returns a single shared instance per provider for every request. The OAuth flow stores intermediate state as struct fields on this singleton:</p> <p>**Token storage** — [`generic_oauth_service.go` line 96](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/generic_oauth_service.go#L96): ```go generic.token = token // Shared mutable field on singleton ```</p> <p>**Verifier storage** — [`generic_oauth_service.go` line 81](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/service/generic_oauth_service.go#L81): ```go generic.verifier = verifier // Shared mutable field on singleton ```</p> <p>In the callback handler [`oauth_controller.go` lines 136–143](https://github.com/steveiliop56/tinyauth/blob/592b7ded24959013f8af63ab9930254c752c8c8e/internal/controller/oauth_controller…</p> https://cve.radiocsirt.org/vuln/ghsa-9q5m-jfc4-wc92