CVE-2026-28513CWE-863

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

High · published March 9, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
22.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00311 · 22.8th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-03-09T22:19Z
EPSS history
Timeline
  • 09 MAR 22:19Z
    Pocket ID: OIDC authorization code validation uses AND instead of OR, allowing cross-client token exchange
    cvelistv5