What is CVE-2026-28513?

CVE-2026-28513 is a high-severity vulnerability in Pocket-Id, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-03-10.

How severe is CVE-2026-28513?

High severity. CVSS v3 base score is 8.5 out of 10.

Auth bypass in Pocket-Id

CVE-2026-28513

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.

Vulnerability class: Broken Access Control

Published 2026-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Pocket-Id — versions < 2.4.0
Pocket-Id Pocket Id

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28513?: CVE-2026-28513 is a high-severity vulnerability in Pocket-Id, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-03-10.
How severe is CVE-2026-28513?: High severity. CVSS v3 base score is 8.5 out of 10.