CVE-2026-33544

CVE-2026-33544 affects tinyauth: before v5.0.5, GenericOAuthService, GithubOAuthService, and GoogleOAuthService store PKCE verifiers and access tokens on shared singleton instances. A race between VerifyCode() and Userinfo() during concurrent OAuth logins can cause one user’s session to be popula...

org.keycloak.protocol.oidc: Keycloak Refresh Token Reuse Bypass via TOCTOU Race Condition

A flaw was found in the Keycloak server during refresh token processing, specifically in the TokenManager class responsible for enforcing refresh token reuse policies. When strict refresh token rotation is enabled, the validation and update of refresh token usage are not performed atomically. Thi...

Race Condition

Overview Affected versions of this package are vulnerable to Race Condition in the updateUser function, specifically when handling concurrent requests. that exploit. An attacker can gain higher-level privileges by sending multiple simultaneous requests that manipulate user roles during a timing g...

Tinyauth has OAuth account confusion via shared mutable state on singleton service instances

Summary 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...

AVideo Vulnerable to Wallet Balance Double-Spend via TOCTOU Race Condition in transferBalance

Summary The transferBalance method in plugin/YPTWallet/YPTWallet.php contains a Time-of-Check-Time-of-Use TOCTOU race condition. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new balance — all without database transactions or row-level locking. An attack...

Parse Server has an MFA single-use token bypass via concurrent authData login requests

Impact An attacker who possesses a valid authentication provider token and a single MFA recovery code or SMS one-time password can create multiple authenticated sessions by sending concurrent login requests via the authData login endpoint. This defeats the single-use guarantee of MFA recovery cod...

CVE-2026-34368 AVideo Vulnerable to Wallet Balance Double-Spend via TOCTOU Race Condition in transferBalance

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the transferBalance method in plugin/YPTWallet/YPTWallet.php contains a Time-of-Check-Time-of-Use TOCTOU race condition. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new...

CVE-2026-34368

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the transferBalance method in plugin/YPTWallet/YPTWallet.php contains a Time-of-Check-Time-of-Use TOCTOU race condition. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new...

BIT-PARSE-2026-33624 Parse Server: MFA recovery code single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending concurrent logi...

CVE-2026-31824

Sylius is an Open Source eCommerce Framework on Symfony. A Time-of-Check To Time-of-Use TOCTOU race condition was discovered in the promotion usage limit enforcement. The same class of vulnerability affects the promotion usage limit the global used counter on Promotion entities, coupon usage limi...

CVE-2026-33624 Parse Server: MFA recovery code single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending...

CVE-2026-33624

CVE-2026-33624 affects Parse Server. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who knows a user’s password and a valid MFA recovery code can reuse that code indefinitely by sending concurrent login requests, defeating the single‑use design of recovery codes. Impacted component: MFA...

CVE-2026-33624 Parse Server: MFA recovery code single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending...

CVE-2026-33624 Parse Server: MFA recovery code single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending...

CVE-2026-32887 Effect Bug: `AsyncLocalStorage` context lost/contaminated inside Effect fibers under concurrent load with RPC

Effect is a TypeScript framework that consists of several packages that work together to help build TypeScript applications. Prior to version 3.20.0, when using RpcServer.toWebHandler or HttpApp.toWebHandlerRuntime inside a Next.js App Router route handler, any Node.js AsyncLocalStorage-dependent...

GHSA-38F7-945M-QR2G Effect `AsyncLocalStorage` context lost/contaminated inside Effect fibers under concurrent load with RPC

Versions - effect: 3.19.15 - @effect/rpc: 0.72.1 - @effect/platform: 0.94.2 - Node.js: v22.20.0 - Vercel runtime with Fluid compute - Next.js: 16 App Router - @clerk/nextjs: 6.x Root cause Effect's MixedScheduler batches fiber continuations and drains them inside a single microtask or timer...

BIT-PARSE-2026-32943 Parse Server has a password reset token single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.48, the password reset mechanism does not enforce single-use guarantees for reset tokens. When a user requests a password reset, the generated token can be consumed by...

PT-2026-26764

Name of the Vulnerable Software and Affected Versions Vikunja versions prior to 2.2.0 Description The software is susceptible to a denial-of-service DoS condition triggered by unbounded image decoding and resizing during preview generation. An attacker can exploit this by providing a highly...

CVE-2026-32700

A flaw was found in Devise, an authentication solution for Rails. A race condition in the Confirmable module allows a remote attacker to confirm an email address they do not own. By sending two concurrent email change requests, an attacker can desynchronize the confirmation token and unconfirmed...

CVE-2026-32943 Parse Server has a password reset token single-use bypass via concurrent requests

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.28 and 8.6.48, the password reset mechanism does not enforce single-use guarantees for reset tokens. When a user requests a password reset, the generated token can be...