CVE-2026-28513
Pocket ID: OIDC authorization code validation uses AND instead of OR, allowing cross-client token exchange
Description
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.
INFO
Published Date :
March 10, 2026, 5:38 p.m.
Last Modified :
March 13, 2026, 3:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Pocket ID to version 2.4.0 or later.
- Ensure proper validation of authorization codes.
- Verify client ID and code expiration.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28513.
| URL | Resource |
|---|---|
| https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 | Exploit Vendor Advisory |
| https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28513 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28513
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28513 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28513 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:pocket-id:pocket_id:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.0 Added Reference Type CISA-ADP: https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 10, 2026
Action Type Old Value New Value Added Reference https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2 -
New CVE Received by [email protected]
Mar. 10, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N Added CWE CWE-863 Added Reference https://github.com/pocket-id/pocket-id/security/advisories/GHSA-qh6q-598w-w6m2