VMware Workspace ONE Access - Authentication Bypass

VMware Workspace ONE Access has two authentication bypass vulnerabilities CVE-2022-22955 & CVE-2022-22956 in the OAuth2 ACS framework. A malicious actor may bypass the authentication mechanism and execute any operation due to exposed endpoints in the authentication framework. id: CVE-2022-22956...

Astra Linux – Vulnerability in curl

There is an improper authentication vulnerability in curl versions 7.33.0 through and including 7.82.0. This vulnerability may allow for the reuse of OAUTH2-authenticated connections without ensuring that the connection was authentically verified with the same credentials used for this transfer...

EUVD-2026-36714

AshAuthentication vulnerable to OAuth2/OIDC account takeover via email-based user matching...

CVE-2026-70636

Flowise 3.1.4 contains an authentication bypass affecting the OAuth2 credential refresh endpoint. The root cause is a prefix-based whitelist in the authentication middleware (packages/server/src/utils/constants.ts) that allows an unauthenticated POST to the oauth2-credential refresh route when a ...

CVE-2026-57818 Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

CVE-2026-57818 Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

GHSA-QGVM-J2HM-6M38 Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service

Summary The OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is in WHITELISTURLS, meaning it requires no authentication. It decrypts the stored credential containing clientId, clientSecret, refreshtoken, sends a refresh request to the configured OAuth provider, a...

CVE-2026-70478 Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELISTURLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh...

EUVD-2026-52912

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELISTURLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh...

EUVD-2026-52855

Flowise is a drag-and-drop user interface for building customized large language model LLM flows. Prior to 3.1.3, Flowise has three OAuth2 credential endpoints that look up credentials by id alone with no workspaceId filter. The authorize, callback, and refresh handlers query the Credential table...

CVE-2026-69250

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled...

GHSA-R745-8HWV-H473 Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration

Summary The OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design it is in the public whitelist and performs a server-side HTTP request to a credential-controlled URL accessTokenUrl without SSRF protections. In runtime validation, this...

CVE-2026-67611

OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allows attackers with valid credentials to circumvent multi-factor authentication by exploiting the exposed OAuth2 password grant flow through an unauthenticated client registration endpoint. Attackers can register an OAut...

CVE-2026-67610

OpenEMR through 8.2.0 contains an improper authentication vulnerability in the OAuth2 dynamic client registration endpoint that allows unauthenticated attackers to register a malicious client with system-level FHIR scopes by supplying a self-generated RSA keypair via the jwks field. Once an...

CVE-2026-67611

OpenEMR up to version 8.2.0 is affected by an authentication bypass via the OAuth2 password grant flow exposed through an unauthenticated client registration endpoint. The vulnerability enables an attacker with valid credentials to register an OAuth2 client via the unauthenticated endpoint and th...

CVE-2026-67437

OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapiauthoauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or...

CVE-2026-67437 OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)

OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapiauthoauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or...

UBUNTU-CVE-2026-54603

OAuth2 is a Ruby wrapper for the OAuth 2.0 and 2.1 authorization frameworks, including OpenID Connect OIDC. From 0.4.0 to 2.0.21, a protocol-relative redirect Location returned to OAuth2::Clientrequest overrides the request authority, so the bearer Authorization header is sent to an...

CVE-2026-54603

Summary (CVE-2026-54603) OAuth2 (Ruby) versions 0.4.0 through 2.0.21 leak credentials via protocol-relative redirects during the OAuth2::Client#request flow. When a 301/302/303/307 redirect’s Location header is protocol-relative (//host/...), the client’s base URL is overridden and the original A...

Budibase: OAuth2 Token Disclosure via Automation Test Results Broadcast to Other Builders

Summary When an SSO-authenticated user tests an automation in the Budibase builder, their OAuth2 access token and refresh token are included in the automation test results. These results are broadcast via WebSocket to all builders connected to the same dev app and stored in an in-memory cache...