PT-2026-87054

XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for client secret and code verifier parameters. Attackers can exploit PHP truthy evaluation logic, which...

PT-2026-87055

XenForo before 2.3.13 contains an authorization flaw in the OAuth2 token endpoint that allows attackers controlling any allowlisted redirect URI to bypass redirect URI binding by submitting a different allowlisted URI than the one recorded at authorization time. Attackers can exchange an...

CVE-2026-73310: Incorrect Authorization

XenForo before 2.3.13 contains an authorization flaw in the OAuth2 token endpoint that allows attackers controlling any allowlisted redirect URI to bypass redirect URI binding by submitting a different allowlisted URI than the one recorded at authorization time. Attackers can exchange an...

CVE-2026-73309: Incorrect Comparison

XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for clientsecret and codeverifier parameters. Attackers can exploit PHP truthy evaluation logic, which...

PT-2026-95537

TuxCare rebuilt org.springframework.security:spring-security-oauth2-authorization-server to address 1 CVE. Fixed in 1.5.8-tuxcare.1...

CVE-2026-82757

Server-Side Request Forgery SSRF vulnerability in ash-project ashauthenticationoauth2server allows an attacker who controls a client metadata URL and its DNS to make the server connect to internal or loopback addresses. publicip?/1 in AshAuthentication.Oauth2Server.CIMD.ReqFetcher enforces the...

CVE-2026-82756 ash_authentication_oauth2_server interpolates a tenant-derived value into the WWW-Authenticate challenge without escaping, allowing header parameter injection

Improper Encoding or Escaping of Output vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to inject arbitrary authentication parameters into the WWW-Authenticate challenge header. BearerPlug and RequireScopePlug built the Bearer resourcemetadata="..."...

CVE-2026-82754 ash_authentication_oauth2_server aliases every protocol endpoint under /.well-known, bypassing path-scoped controls

Improper Protection of Alternate Path vulnerability in ash-project ashauthenticationoauth2server exposes the state-changing OAuth endpoints under an unintended URL prefix, bypassing controls scoped to the canonical prefix. oauth2serverprotocolroutes/1 in...

EEF-CVE-2026-82753 Unauthenticated authorize requests create unbounded, never-expiring CIMD client rows and cache entries in ash_authentication_oauth2_server

Summary Allocation of Resources Without Limits or Throttling vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to exhaust database storage and memory. The /authorize endpoint is unauthenticated by design. With Client ID Metadata Documents enabled,...

EUVD-2026-72535

Allocation of Resources Without Limits or Throttling vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to exhaust database storage and memory. The /authorize endpoint is unauthenticated by design. With Client ID Metadata Documents enabled, resolveclient...

CVE-2026-82753 Unauthenticated authorize requests create unbounded, never-expiring CIMD client rows and cache entries in ash_authentication_oauth2_server

Allocation of Resources Without Limits or Throttling vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to exhaust database storage and memory. The /authorize endpoint is unauthenticated by design. With Client ID Metadata Documents enabled, resolveclient...

Cross-Site Scripting (XSS)

org.springframework.security, spring-security-oauth2-authorization-server is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to the default consent page rendering user-controlled values without proper HTML entity encoding, which allows an attacker to inject malicious HTML or...

PT-2026-86927

Server-Side Request Forgery SSRF vulnerability in ash-project ash authentication oauth2 server allows an attacker who controls a client metadata URL and its DNS to make the server connect to internal or loopback addresses. public ip?/1 in AshAuthentication.Oauth2Server.CIMD.ReqFetcher enforces th...

PT-2026-86925

Use of Cache Containing Sensitive Information vulnerability in ash-project ash authentication oauth2 server allows a shared HTTP cache to serve one tenant's OAuth discovery metadata to another tenant's clients. The RFC 8414 and RFC 9728 metadata endpoints in...

PT-2026-86924

Improper Protection of Alternate Path vulnerability in ash-project ash authentication oauth2 server exposes the state-changing OAuth endpoints under an unintended URL prefix, bypassing controls scoped to the canonical prefix. oauth2 server protocol routes/1 in...

PT-2026-86926

Improper Encoding or Escaping of Output vulnerability in ash-project ash authentication oauth2 server allows an unauthenticated attacker to inject arbitrary authentication parameters into the WWW-Authenticate challenge header. BearerPlug and RequireScopePlug built the Bearer resource metadata=".....

PT-2026-86928

Improper Authentication vulnerability in ash-project ash authentication oauth2 server allows an unauthenticated attacker to register OAuth clients even when Dynamic Client Registration is gated by an initial access token. resolve secret/3 in AshAuthentication.Oauth2Server reached through resolve...

PT-2026-86918

Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash authentication oauth2 server allows an unauthenticated attacker to exhaust database storage and memory. The /authorize endpoint is unauthenticated by design. With Client ID Metadata Documents enabled, resolve...

SUSE 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...

CLSA-2026-1788528946 TuxCare security update for org.springframework.security:spring-security-oauth2-authorization-server (1 CVE)

TuxCare rebuilt org.springframework.security:spring-security-oauth2-authorization-server to address 1 CVE. Fixed in 1.3.7-tuxcare.6...