CVE-2026-22752 Spring Security Authorization Server Dynamic Client Registration endpoints perform insufficient validation of client metadata

Authentication bypass by primary weakness vulnerability in Spring Security Spring Authorization Server. This issue affects Spring Authorization Server: from 7.0.0 through 7.0.4, from 1.5.0 through 1.5.6, from 1.4.0 through 1.4.9, from 1.3.0 through 1.3.10...

PYSEC-2026-2508 ha-mcp has XSS via Unescaped HTML in OAuth Consent Form

Summary The ha-mcp OAuth consent form renders user-controlled parameters via Python f-strings with no HTML escaping. An attacker who can reach the OAuth endpoint and convince the server operator to follow a crafted authorization URL could execute JavaScript in the operator's browser. This affects...

CVE-2026-9705

A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token RAT, could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker...

CVE-2026-9086

A flaw was found in Keycloak. A remote attacker with administrative privileges, specifically those with manage-client permission or access to client registration endpoints, could bypass client Uniform Resource Identifier URI validation. This is achieved by registering a malicious client with a...

Security Bulletin: IBM Datapower Operations Dashboard is vulnerable to Server-side Request Forgery CVE-2026-1180

Summary keycloak is used by the IBM Datapower Operations Dashboard as part of their IAM and SSO implementation Vulnerability Details CVEID:CVE-2026-1180 DESCRIPTION: A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjw...

Doorkeeper Openid Connect: Dynamic Client Registration feature creates public clients with client_secret

Impact The DynamicClientRegistrationControllerregister action hard-codes confidential: false when creating applications dynamicclientregistrationcontroller.rb:18-25, yet the response includes a clientsecret and advertises tokenendpointauthmethodssupported: "clientsecretbasic", "clientsecretpost"...

User Impersonation

Overview doorkeeper-openidconnect is an OpenID Connect extension for Doorkeeper. Affected versions of this package are vulnerable to User Impersonation via the Dynamic Client Registration feature that treats clientsecretbasic and clientsecretpost parameters as confidential: false which allows...

GHSA-M6VC-F87M-CC2H Doorkeeper Openid Connect: Dynamic Client Registration feature creates public clients with client_secret

Impact The DynamicClientRegistrationControllerregister action hard-codes confidential: false when creating applications dynamicclientregistrationcontroller.rb:18-25, yet the response includes a clientsecret and advertises tokenendpointauthmethodssupported: "clientsecretbasic", "clientsecretpost"...

PT-2026-46299

Name of the Vulnerable Software and Affected Versions Doorkeeper versions prior to 1.10.0 Description An issue exists in the Dynamic Client Registration feature where applications are created with the confidential variable hard-coded to false. Although the registration response provides a client...

Dynamic Client Registration feature creates public clients with client_secret

Impact The DynamicClientRegistrationControllerregister action hard-codes confidential: false when creating applications dynamicclientregistrationcontroller.rb:18-25, yet the response includes a clientsecret and advertises tokenendpointauthmethodssupported: "clientsecretbasic", "clientsecretpost"...

CVE-2026-45609

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

CVE-2026-45609

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

CVE-2026-45609

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

CVE-2026-45609 mcp-security: Unvalidated URL Fetching (SSRF)

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

CVE-2026-45609 mcp-security: Unvalidated URL Fetching (SSRF)

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

EUVD-2026-33323

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

CVE-2026-45609 mcp-security: Unvalidated URL Fetching (SSRF)

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted...

A First Measurement Study on Authentication Security in Real-World Remote MCP Servers

The Model Context Protocol MCP is emerging as a common interface connecting large language models LLMs with external services. Remote deployments are becoming increasingly important as agents connect to user-linked online services, such as social, productivity, and financial services. In such...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via unvalidated URL processing in the OAuth2 dynamic client registration process. An attacker can access internal network resources or sensitive information by supplying malicious URLs to be fetched by t...

Spring AI MCP Security: Unvalidated URL Fetching (SSRF)

Summary The mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol MCP security specifications. Specifically, it processes untrusted URLs for OAuth-related discovery and metadata without verifying if the targets are malicious or internal to...