CVE-2026-18918

Eclipse Lyo versions 2.0.0 through 7.0.0 are affected by an OAuth 1.0 authorization bypass in the 2-legged authentication path. Applications relying on Lyo's AbstractAdapterCredentialsFilter are vulnerable because an unauthenticated attacker can register a provisional trusted client and immediate...

CVE-2026-18918 OAuth 1.0 session-fixation chain via unauthenticated provisional-consumer registration and insecure v1_0Allowed default

In Eclipse Lyo versions 2.0.0 to 7.0.0, OAuth server authorization checks can be bypassed when the 2-legged auth is supported by the server. In those cases, application that based their authz filters upon Lyo-provided AbstractAdapterCredentialsFilter, are vulnerable. An attacked can create a...