CVE-2026-82758

Improper Authentication vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to register OAuth clients even when Dynamic Client Registration is gated by an initial access token. resolvesecret/3 in AshAuthentication.Oauth2Server reached through resolvesecre...

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-2026-82753

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-2026-82756

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

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...

CVE-2026-82755

Use of Cache Containing Sensitive Information vulnerability in ash-project ashauthenticationoauth2server 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...

EUVD-2026-72540

Improper Authentication vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to register OAuth clients even when Dynamic Client Registration is gated by an initial access token. resolvesecret/3 in AshAuthentication.Oauth2Server reached through resolvesecre...

CVE-2026-82758

ash_authentication_oauth2_server (ash-project, Elixir) has an Improper Authentication flaw in resolve_secret/3: any secret-provider return other than {:ok, _} or :error was treated as valid, wrapping nil, false, or "" as {:ok, value}. When the initial_access_token resolves to such an empty value,...

CVE-2026-82758 ash_authentication_oauth2_server treats an empty resolved secret as valid, opening the gated Dynamic Client Registration endpoint

Improper Authentication vulnerability in ash-project ashauthenticationoauth2server allows an unauthenticated attacker to register OAuth clients even when Dynamic Client Registration is gated by an initial access token. resolvesecret/3 in AshAuthentication.Oauth2Server reached through resolvesecre...

EUVD-2026-72539

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-2026-82757 ash_authentication_oauth2_server CIMD fetcher classifies IPv4-in-IPv6 and site-local addresses as public, allowing SSRF

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...

EEF-CVE-2026-82757 ash_authentication_oauth2_server CIMD fetcher classifies IPv4-in-IPv6 and site-local addresses as public, allowing SSRF

Summary 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...

CVE-2026-82757

CVE-2026-82757 is a Server-Side Request Forgery (SSRF) vulnerability in the Elixir package ash_authentication_oauth2_server , affecting versions from 0.3.0 before 0.3.1. The flaw resides in the public_ip?/1 function of AshAuthentication.Oauth2Server.CIMD.ReqFetcher, which incorrectly classifies I...

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-2026-82756

ash_authentication_oauth2_server (ash-project) is vulnerable to header parameter injection in its BearerPlug and RequireScopePlug. A tenant-derived resource_metadata URL is interpolated directly into the WWW-Authenticate challenge without escaping, allowing an unauthenticated attacker in a multi-...

EUVD-2026-72538

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-2026-82755

ash_authentication_oauth2_server (ash-project, versions 0.1.3 through before 0.3.1) suffers from a cache-poisoning issue in its RFC 8414 / RFC 9728 metadata endpoints (AshAuthentication.Phoenix.Oauth2Server.ProtocolRouter). When a tenant is derived from a header or Host value rather than the URL,...

EUVD-2026-72537

Use of Cache Containing Sensitive Information vulnerability in ash-project ashauthenticationoauth2server 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...

CVE-2026-82755 ash_authentication_oauth2_server serves tenant-specific OAuth metadata as publicly cacheable without Vary, enabling cross-tenant confusion

Use of Cache Containing Sensitive Information vulnerability in ash-project ashauthenticationoauth2server 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...

CVE-2026-82754

An Improper Protection of Alternate Path vulnerability in the ash_authentication_oauth2_server Elixir library (versions 0.1.0 through before 0.3.1) causes state-changing OAuth endpoints to be reachable under an unintended URL prefix. The oauth2_server_protocol_routes/1 function in the Phoenix rou...