Vulnerability in Getlago Lago
CVE-2026-119420
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305 (patch)
- github.com/getlago/lago-api/pull/6146 (issue-tracking, patch)
- github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb (technical-description)
- github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb (technical-description)
- abraxaslabs.tech/research/lago-invite-ato (third-party-advisory)
- github.com/getlago/lago-api (product)
- www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acce… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119420?
- CVE-2026-119420 is a high-severity vulnerability in Getlago Lago, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 8.8/10. Published 2026-10-30.
- How severe is CVE-2026-119420?
- High severity. CVSS v3 base score is 8.8 out of 10.