CVE-2026-59243

CVE-2026-59243 — Apache Airflow FAB Auth Manager JWT signature bypass Korean: README.ko.md Apache advisory: https://lists.apache.org/thread/x4784l7z00tl3gw4tv2dmvoon77rxgpl published 2026-07-29 CVE record: https://vulners.com/cve/CVE-2026-59243 Fixed in: apache-airflow-providers-fab==3.7.3 Class:...

CVE-2026-45156-POC

Hacker Matrix Glitch 🚨 CVE-2026-45156 🚨 Nextcloud useroidc ID4me JWT Signature Bypass Fully Automated Proof of Concept PoC Exploit for Admin Takeover. 📖 The Story Behind every CVE, there's a story. This one was found at 2 AM on a cold winter night, fueled by a breakup mashup on loop. Read the ful...

Mnemosyne has JWT signature verification bypass sync server that allows authentication bypass

Summary The Mnemosyne sync server's authentication check decoded JWT bearer tokens but never verified their HMAC-SHA256 signatures. Any well-formed token was accepted, allowing an unauthenticated attacker to impersonate any user and read or modify their sync data. Severity: Critical CVSS 3.1:...

CVE-2026-92787

Feast through 0.66.0 fails to verify JWT token signatures before establishing user identity, allowing attackers to bypass all role-based access control by presenting an unverified token with a hardcoded claim value. Attackers can obtain trusted internal identity and gain unchecked read and write...

EUVD-2026-80389

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

CVE-2026-14916: Improper Handling of Unexpected Data Type

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

CVE-2026-87802 Apache Syncope: SRA OAuth2 JWT signature verification bypass

Improper verification of cryptographic signature vulnerability in Apache Syncope. When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA. This issue...

CVE-2026-87802 Apache Syncope: SRA OAuth2 JWT signature verification bypass

Improper verification of cryptographic signature vulnerability in Apache Syncope. When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA. This issue...

CVE-2026-87802

Apache Syncope is vulnerable to an improper verification of cryptographic signature when the SRA is configured for OAuth 2.0 without a JWKS set URI assigned. This flaw allows an attacker to forge arbitrary JWTs to impersonate any user identity and permissions, potentially gaining full access to s...

RDK-B WebUI contains multiple vulnerabilities

Overview RDK Central RDK-B WebUI version, rdkb-2025q4-kirkstone, contains multiple vulnerabilities involving memory corruption, improper authentication, race conditions, and insufficient input validation. An attacker with network access to an affected WebUI may be able to bypass authentication,...

CVE-2025-9210 Missing JSON Web Token signature validation in Otalio Ship Property Management System

Missing signature validation in JSON Web Tokens in Otalio Ship Property Management System versions before 2.22.0 allows authenticated attackers to escalate privileges via tampering with JWTs...

CVE-2026-54733 moodle-local_o365: Authentication bypass via unverified JWT signature in Teams SSO endpoint

The Microsoft 365 and Microsoft Entra ID Plugins for Moodle provide Office 365 and Azure Active Directory integration for Moodle. Prior to 4.5.6, 5.0.5, and 5.1.1, the Microsoft Office 365 Integration plugin localo365 Teams SSO endpoint ssologin.php base64-decodes a JWT payload and authenticates...

CVE-2026-54733: Improper Verification of Cryptographic Signature

The Microsoft 365 and Microsoft Entra ID Plugins for Moodle provide Office 365 and Azure Active Directory integration for Moodle. Prior to 4.5.6, 5.0.5, and 5.1.1, the Microsoft Office 365 Integration plugin localo365 Teams SSO endpoint ssologin.php base64-decodes a JWT payload and authenticates...

CVE-2026-10714: Weak Authentication

A security issue exists within FactoryTalk® Services Platform FTSP, allowing an attacker to bypass JWT signature validation during Okta Web Authentication. The vulnerability stems from the application not verifying that the JWT algorithm is configured for RSA, enabling an attacker to set the...

Exploit for CVE-2026-45156

CVE-2026-45156: Nextcloud useroidc ID4me JWT Signature Bypass...

CVE-2026-45156 Nextcloud: Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDC

Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This issue has been patched in versions...

CVE-2026-9094: Undefined Security Weakness

Casdoor versions 2.362.0 and earlier contain a vulnerability enabling cross-organization token exchange. The GetTokenExchangeToken function in object/tokenoauth.go validates JWT signatures but does not verify that the token's user belongs to the same organization as the target application. This c...

Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDC

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CVE-2026-38651: Improper Verification of Cryptographic Signature

Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any host in the network...

CVE-2026-33746 Convoy: JWT Signature Verification Bypass Allows Authentication as Arbitrary Users

Convoy is a KVM server management panel for hosting businesses. From version 3.9.0-beta to before version 4.5.1, the JWTService::decode method did not verify the cryptographic signature of JWT tokens. While the method configured a symmetric HMAC-SHA256 signer via lcobucci/jwt, it only validated...