CVE-2026-43983: Pocket ID: OIDC refresh token flow bypasses authorization revocation, account disabling, and group restrictions

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-12 · updated 2026-06-17
Weakness: CWE-285

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.

Affected products

pocket-id: before 2.6.0 — fixed in 2.6.0

How to fix

Upgrade to a fixed version: pocket-id 2.6.0. Check the vendor advisory for mitigations.

References

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