CVE-2023-31999

    Dashboard / Vulnerabilities / CVE-2023-31999

    CVE-2023-31999

    Published: 4 Jul 2023Last Modified: 12 Aug 2026

    Summary:

    Details: All versions of @fastify/oauth2 used a statically generated state parameter at startup time and were used across all requests for all users. The purpose of the Oauth2 state parameter is to prevent Cross-Site-Request-Forgery attacks. As such, it should be unique per user and should be connected to the user's session in some way that will allow the server to validate it. v7.2.0 changes the default behavior to store the state in a cookie with the http-only and same-site=lax attributes set. The state is now by default generated for every user. Note that this contains a breaking change in the checkStateFunction function, which now accepts the full Request object.

    References: https://auth0.com/docs/secure/attack-protection/state-parameters, https://github.com/fastify/fastify-oauth2/releases/tag/v7.2.0, https://hackerone.com/reports/2020418, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31999.json, https://nvd.nist.gov/vuln/detail/CVE-2023-31999

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b97cc9d3f16cf6ddd9744390fddabcc982beef82
    Fixed -b97cc9d3f16cf6ddd9744390fddabcc982beef82

    Affected versions

    v7.2.0

    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-2023-31999 | CVE-DB