Openid Connect vulnerabilities

2 vulnerabilities

Known vulnerabilities in Openid Connect, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

6.9CVE-2025-27370openidopenid_connect
EPSS score
0.34%
OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.6.1CVE-2019-9837debianruby-doorkeeper-openid-connect+2
EPSS score
1.35%
Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.