CVE-2026-119420

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    CVE-2026-119420

    Published: 30 Oct 2026Last Modified: 7 Nov 2026

    Summary: Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation

    Details: Lago through 1.55.0 contains an authentication bypass vulnerability that allows organization administrators to obtain session tokens for existing accounts via the acceptInvite mutation without a password check. Attackers can invite a victim's email, accept with an arbitrary password, and receive a JWT to access the victim's organizations, billing data, API keys and payment integrations.

    References: https://abraxaslabs.tech/research/lago-invite-ato, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119420.json, https://nvd.nist.gov/vuln/detail/CVE-2026-119420, https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation, https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305, https://github.com/getlago/lago-api/pull/6146, https://github.com/getlago/lago-api, https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16, https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5a9d5935b027d1db7171c7c015283d5870451305

    Affected versions

    v1.55.0

    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-2026-119420 | CVE-DB