CVE-2026-28513
CVE-2026-28513 is a high-severity vulnerability in Pocket-id Pocket Id with a CVSS 3.x base score of 8.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.
Key facts
- Severity: High (CVSS 3.x base score 8.5)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10408
- Weakness: CWE-863
- Affected product: Pocket-id Pocket Id
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-28513?
- CVE-2026-28513 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2026-28513 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-28513?
- CVE-2026-28513 affects Pocket-id Pocket Id. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-28513?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-28513 have an EU (EUVD) identifier?
- Yes. CVE-2026-28513 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10408.
- When was CVE-2026-28513 published?
- CVE-2026-28513 was published on 2026-03-10 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:pocket-id:pocket_id:*:*:*:*:*:*:*:*
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