How severe is CVE-2026-43983?

CVE-2026-43983 has a CVSS 3.x base score of 8.1, 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 high, and availability none.

Is CVE-2026-43983 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-43983?

CVE-2026-43983 affects Pocket-id Pocket Id. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-43983?

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-2026-43983 have an EU (EUVD) identifier?

Yes. CVE-2026-43983 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29482.

When was CVE-2026-43983 published?

CVE-2026-43983 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-43983

CVE-2026-43983 is a high-severity vulnerability in Pocket-id Pocket Id with a CVSS 3.x base score of 8.1. 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-285.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 8.5
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29482
Weakness: CWE-285
Affected product: Pocket-id Pocket Id
Published: 2026-05-12
Last modified: 2026-06-17

Description

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. Prior to 2.6.0, The createTokenFromRefreshToken function (oidc_service.go) validates the refresh token's cryptographic integrity but does not re-validate the user's current authorization state before issuing new tokens. This allows (1) the client to refresh the token indefinitely after authorization revocation, (2) the refresh token to continue to work after the account is disabled, and (3) the token to work after the client is removed from the group. This vulnerability is fixed in 2.6.0.

Frequently asked questions

What is CVE-2026-43983?: Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. Prior to 2.6.0, The createTokenFromRefreshToken function (oidc_service.go) validates the refresh token's cryptographic integrity but does not re-validate the user's current authorization state before issuing new tokens. This allows (1) the client to refresh the token indefinitely after authorization revocation, (2) the refresh token to continue to work after the account is disabled, and (3) the token to work after the client is removed from the group. This vulnerability is fixed in 2.6.0.
How severe is CVE-2026-43983?: CVE-2026-43983 has a CVSS 3.x base score of 8.1, 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 high, and availability none.
Is CVE-2026-43983 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-43983?: CVE-2026-43983 affects Pocket-id Pocket Id. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-43983?: 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-2026-43983 have an EU (EUVD) identifier?: Yes. CVE-2026-43983 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29482.
When was CVE-2026-43983 published?: CVE-2026-43983 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://github.com/pocket-id/pocket-id/security/advisories/GHSA-w6p7-2fxx-4f44

Affected products (1)

cpe:2.3:a:pocket-id:pocket_id:*:*:*:*:*:*:*:*

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