AIKIDO-2026-941486
openam-oauth2 is vulnerable to Server-Side Request Forgery (SSRF)
48
Medium Risk
This Affects:
openam-oauth2TL;DR
The OpenID Connect dynamic client registration endpoint fetches the client-supplied sector_identifier_uri without validating the URL scheme, host, or address. This lets a caller make the server issue an HTTP GET to an arbitrary URL. When open dynamic client registration is enabled it is exploitable without authentication, and otherwise any holder of a valid access token can trigger it, reaching internal services and cloud metadata endpoints. The fix validates the URI before fetching, restricting it to https and blocking private, loopback, and link-local addresses.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
openam-oauth2 is vulnerable to Server-Side Request Forgery (SSRF) in versions 0.0.1 - 16.1.1.
How to fix this
Upgrade the org.openidentityplatform.openam:openam-oauth2 library to the patch version.
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