{"id":"CVE-2026-119420","title":"Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation","summary":"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 vic…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-288"],"vendor":"getlago","product":"lago","affected":["lago <= 1.55.0"],"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T11:30:51.565Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119420","references":[{"url":"https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305"},{"url":"https://github.com/getlago/lago-api/pull/6146"},{"url":"https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98"},{"url":"https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16"},{"url":"https://abraxaslabs.tech/research/lago-invite-ato"},{"url":"https://github.com/getlago/lago-api"},{"url":"https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation","label":"VulnCheck Advisory: Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation"}],"tags":["cve.org"],"epss":0.00394,"epssPercentile":0.33603,"ingestedAt":"2026-11-03T10:42:03.639Z","slug":"CVE-2026-119420","body":"## Overview\n\nLago 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.\n\n## Affected\n\n- `lago <= 1.55.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}