CVE-2026-119420
Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-288 |
| Vendor | getlago |
| Product | lago |
| Published | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
getlago / lago
0 ≤ 1.55.0
References
github.com: https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305 github.com: https://github.com/getlago/lago-api/pull/6146 github.com: https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98 github.com: https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16 abraxaslabs.tech: https://abraxaslabs.tech/research/lago-invite-ato github.com: https://github.com/getlago/lago-api vulncheck.com: https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation
Credits
Abraxas Labs