CVE-2026-26247 Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...

CVE-2026-26232 Gitea OAuth2 authorization codes lack expiry and reuse enforcement

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange...

CVE-2026-26232

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange...

CVE-2026-26232 Gitea OAuth2 authorization codes lack expiry and reuse enforcement

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange...

CVE-2026-26247 Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...

CVE-2026-26232 Gitea OAuth2 authorization codes lack expiry and reuse enforcement

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange...

CVE-2026-26247 Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...

CVE-2026-26247: Improper Access Control

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...

PT-2026-55596

Name of the Vulnerable Software and Affected Versions Gitea versions prior to 1.25.5 Description The software does not consistently enforce the expiry and single-use requirement of OAuth2 authorization codes during the token exchange process. OAuth2 is a standard for access delegation, allowing...

BIT-ENVOY-2026-48090 Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

GO-2026-5231 Dex: Token-exchange endpoint is missing AllowedConnectors enforcement in github.com/dexidp/dex

Dex: Token-exchange endpoint is missing AllowedConnectors enforcement in github.com/dexidp/dex...

CVE-2026-47386

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, two concurrent token-exchange requests using the same OAuth authorization code could each mint a distinct valid accesstoken, refreshtoken pair, breaking the single-use guarantee that PKCE relies on. This vulnerability ...

EUVD-2026-38614

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, two concurrent token-exchange requests using the same OAuth authorization code could each mint a distinct valid accesstoken, refreshtoken pair, breaking the single-use guarantee that PKCE relies on. This vulnerability ...

CVE-2026-47386

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, two concurrent token-exchange requests using the same OAuth authorization code could each mint a distinct valid accesstoken, refreshtoken pair, breaking the single-use guarantee that PKCE relies on. This vulnerability ...

CVE-2026-47386: Concurrent Execution using Shared Resource with Improper Synchronization

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, two concurrent token-exchange requests using the same OAuth authorization code could each mint a distinct valid accesstoken, refreshtoken pair, breaking the single-use guarantee that PKCE relies on. This vulnerability ...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the handleTokenExchange function. An attacker can gain unauthorized access to restricted resources by exploiting the lack of enforcement of allowed connectors when exchanging tokens. This is only exploitable i...

GHSA-7QJX-GP9H-65QJ Dex: Token-exchange endpoint is missing AllowedConnectors enforcement

Summary server/handlers.go::handleTokenExchange lines 1804-1893 does not call isConnectorAllowedclient.AllowedConnectors, connID before issuing tokens, while sibling handlers do. This is a per-client connector ACL gap on the token-exchange endpoint; the redirect-flow paths enforce the same field...

Dex: Token-exchange endpoint is missing AllowedConnectors enforcement

Summary server/handlers.go::handleTokenExchange lines 1804-1893 does not call isConnectorAllowedclient.AllowedConnectors, connID before issuing tokens, while sibling handlers do. This is a per-client connector ACL gap on the token-exchange endpoint; the redirect-flow paths enforce the same field...

PT-2026-51124

Summary server/handlers.go::handleTokenExchange lines 1804-1893 does not call isConnectorAllowedclient.AllowedConnectors, connID before issuing tokens, while sibling handlers do. This is a per-client connector ACL gap on the token-exchange endpoint; the redirect-flow paths enforce the same field...

Race Condition

Overview nocodb is a NocoDB Affected versions of this package are vulnerable to Race Condition through a race condition in the OAuth token exchange. An attacker can obtain multiple valid token pairs by making concurrent requests using the same authorization code and PKCE verifier. Remediation...