CVE-2026-121939

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    CVE-2026-121939

    Published: 4 Nov 2026Last Modified: 5 Nov 2026

    Summary: Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking

    Details: Databasement before 1.10.9 contains an authentication bypass vulnerability in OAuthService::findOrCreateLocalUser() that links OIDC identities to local users by email without checking email_verified. Attackers can register an identity provider account with a victim's unverified email to log in as any user, including the super-admin, and retain access after password resets.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121939.json, https://github.com/David-Crty/databasement/releases/tag/v1.10.9, https://github.com/David-Crty/databasement/security/advisories/GHSA-mh6w-2cch-w8v8, https://nvd.nist.gov/vuln/detail/CVE-2026-121939, https://www.vulncheck.com/advisories/databasement-before-1.10.9-account-takeover-via-oidc-email-auto-linking, https://github.com/David-Crty/databasement/commit/b7f4079c02b7ce3f1cf2844de182e809636c3382, https://github.com/David-Crty/databasement, https://github.com/David-Crty/databasement/blob/v1.10.8/app/Services/OAuthService.php#L55-L68

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -b7f4079c02b7ce3f1cf2844de182e809636c3382

    Affected versions

    v1.10.8
    v1.10.7
    v1.10.6
    v1.10.5
    v1.10.4
    v1.10.3
    v1.10.2
    v1.10.1
    v1.10.0

    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-2026-121939 | CVE-DB