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...

GO-2026-5507 Mattermost has session spoofing due to lack of single-use consumption of guest magic link tokens enforcement in github.com/mattermost/mattermost-server

Mattermost has session spoofing due to lack of single-use consumption of guest magic link tokens enforcement in github.com/mattermost/mattermost-server...

GO-2026-5160 Omni has a TOCTOU race condition that allows multiple concurrent uses of a single-use SAML session token in github.com/siderolabs/omni

Omni has a TOCTOU race condition that allows multiple concurrent uses of a single-use SAML session token in github.com/siderolabs/omni...

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

CVE-2026-47386 affects NocoDB’s OAuth token-exchange flow. Before 2026.05.1, two concurrent token-exchange requests could use the same OAuth authorization code to mint two valid token pairs, breaking PKCE’s single-use guarantee. The issue is mitigated by a fix in 2026.05.1, which introduces atomi...

CVE-2026-47386 NocoDB: OAuth Authorization Code Race Condition

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 ...

GHSA-GHMH-JHMJ-WCMF nebula-mesh's stores enrollment tokens unhashed in SQLite

internal/store/sqlite.go:1177,1192,1221,1245 — the enrollmenttokens.token column holds the raw UUID token. ConsumeToken does WHERE token = ? against the raw string. Compare with operatorapikeys.keyhash, which is SHA-256 hex constructed in internal/api/middleware.go:51-53. Affected All released...

CVE-2026-56425

The Azure Active Directory AAD authentication implementation contained multiple weaknesses in its OAuth 2.0 authorization flow that could allow attackers to bypass important security guarantees provided by the protocol. The application used the PHP session identifier sessionid as the OAuth state...

EUVD-2026-38228

The Azure Active Directory AAD authentication implementation contained multiple weaknesses in its OAuth 2.0 authorization flow that could allow attackers to bypass important security guarantees provided by the protocol. The application used the PHP session identifier sessionid as the OAuth state...

CVE-2026-50631

CVE-2026-50631 : A TOCTOU race condition in Apache CXF's AbstractOAuthDataProvider allows concurrent requests to reuse the same Refresh Token when recycleRefreshTokens is false, bypassing single-use semantics and generating multiple valid Access Tokens. This can enable token replay/abuse by multi...

CVE-2026-50631

A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or...

CVE-2026-50631 Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing

A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or...

GHSA-8M7C-HF24-5G47 NocoDB: OAuth Authorization Code Race Condition

Summary 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. Details The token-exchange flow read isused and called markAsUsed as an unconditional upda...

NocoDB: OAuth Authorization Code Race Condition

Summary 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. Details The token-exchange flow read isused and called markAsUsed as an unconditional upda...

Omni has a TOCTOU race condition that allows multiple concurrent uses of a single-use SAML session token

Summary SAML.getSession internal/pkg/auth/interceptor/saml.go checks the Used flag on a SAMLAssertion resource and then marks it used in two separate state operations. Because the check and the update are not atomic, concurrent requests carrying the same saml-session token can both observe Used =...

GHSA-5X9F-6VG5-QG4M Omni has a TOCTOU race condition that allows multiple concurrent uses of a single-use SAML session token

Summary SAML.getSession internal/pkg/auth/interceptor/saml.go checks the Used flag on a SAMLAssertion resource and then marks it used in two separate state operations. Because the check and the update are not atomic, concurrent requests carrying the same saml-session token can both observe Used =...

PT-2026-47084

Name of the Vulnerable Software and Affected Versions NocoDB versions prior to 2026.05.1 Description A flaw in the token-exchange flow allows two concurrent requests using the same OAuth authorization code to each generate a distinct valid access token and refresh token pair. This occurs because...

Replay Attack

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Replay Attack through the RequiredActionFactory and required-action implementations in the authentication flo...

Replay Attack

Overview org.keycloak:keycloak-server-spi-private is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Replay Attack through the RequiredActionFactory and required-action implementations in the...

CVE-2026-43930 Parse Server: MFA SMS one-time password accepted twice under concurrent login

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.76 and 9.9.0-alpha.2, a race condition in the MFA SMS one-time password OTP login path allows two concurrent /login requests carrying the same OTP to both succeed and both receive...