CVE-2026-54072

    Dashboard / Vulnerabilities / CVE-2026-54072

    CVE-2026-54072

    Published: 11 Sept 2026Last Modified: 12 Sept 2026

    Summary: Authorizer: Unvalidated redirect_uri in /authorize leaks OAuth2 tokens to attacker-controlled URL

    Details: Authorizer is an open-source, self-hostable authentication and authorization server. Prior to version 2.2.1, the `/authorize` endpoint accepts any `redirect_uri` without validating it against `AllowedOrigins`. When `response_type=token` or `response_type=id_token`, the server appends `access_token`, `id_token`, and `refresh_token` as query parameters and issues a 302 redirect to the attacker-supplied URL. An unauthenticated attacker can obtain the required `client_id` from the public `/graphql?query={meta{client_id}}` endpoint. A partial fix was applied in v2.0.1 to other handlers (`oauth_login`, `verify_email`, `magic_link_login`, `forgot_password`, `invite_members`, `oauth_callback`) but `/authorize` was not included. Version 2.2.1 contains a more complete fix.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54072.json, https://github.com/authorizerdev/authorizer/security/advisories/GHSA-h29v-hj44-q8cv, https://nvd.nist.gov/vuln/detail/CVE-2026-54072

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1726717485db6387a98019e1196dd5a233dfb7f4

    Affected versions

    2.2.1-rc.2
    2.2.1-rc.1
    2.2.1-rc.0
    2.2.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-54072 | CVE-DB