CVE-2026-119420 json
Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation
published 10d ago modified 4d ago also EUVD-2026-113800
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
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 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.
Patch / fix
- github.com/getlago/lago-api@5a9d593 commit
- github.com/getlago/lago-api#6146 pull request
Is CVE-2026-119420 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 4d ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- abraxaslabs.tech https://abraxaslabs.tech/research/lago-invite-ato referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- getlago lago
Classification
- Weakness
-
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
References
-
github.com
/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305
patch
-
github.com
/getlago/lago-api/pull/6146
issue-tracking, patch
-
abraxaslabs.tech
/research/lago-invite-ato
third-party-advisory, exploit
-
github.com
/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98
technical-description
-
github.com
/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16
technical-description
-
github.com
/getlago/lago-api
product
-
vulncheck.com
/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation
third-party-advisory
Sources
- CVE List CVE-2026-119420
- NVD CVE-2026-119420
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.