Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://abraxaslabs.tech/research/lago-invite-ato
- https://github.com/getlago/lago-api
- https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_ser
- https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L
- https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451
- https://github.com/getlago/lago-api/pull/6146
- https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-v
FAQ
What is CVE-2026-119420?
CVE-2026-119420 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 passw...
How severe is CVE-2026-119420?
CVE-2026-119420 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119420?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.