CVE-2026-28513 HIGH

CVE-2026-28513: Pocket ID: OIDC authorization code validation uses AND instead of OR, allowing cross-client token exchange

Vendor Pocket-Id
Product pocket-id
Weakness CWE-863 · Incorrect authorization
Published March 9, 2026
Last update March 10, 2026
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

What the vulnerability does

01Description

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. Prior to 2.4.0, the OIDC token endpoint rejects an authorization code only when both the client ID is wrong and the code is expired. This allows cross-client code exchange and expired code reuse. This vulnerability is fixed in 2.4.0.

Key dates

02Disclosure timeline

March 9, 2026 CVE published
March 10, 2026 Record updated