CVE-2026-28512 — Pocket ID: OAuth redirect_uri validation bypass via userinfo/host confusion
Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed craft…
Published: 2026-03-09 · CVSS: 7.1 · CVSS 3.1
Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed crafted redirect_uri values containing URL userinfo (@) to bypass legitimate callback pattern checks. If an attacker can trick a user into opening a malicious authorization link, the authorization code may be redirected to an attacker-controlled host. This vulnerability is fixed in 2.4.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7