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CVE-2026-119420high8.8

Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation

Impact

Lago versions up to 1.55.0 have an authentication bypass vulnerability via the acceptInvite GraphQL mutation, allowing organization administrators to obtain session tokens without a password check. Attackers can access a victim's organizations, billing data, API keys, and payment integrations. Local access is required.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

getlago · VulnCheck

lago

1 range
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affected

0 → through 1.55.0

semver versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119420

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-288 ↗

Authentication Bypass Using an Alternate Path or Channel

VulnCheck

Related →
Contributing organizations · 1
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Assigning organization

2026-10-30

What changed

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References

7 sources
github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305
patchVulnCheck
github.com/getlago/lago-api/pull/6146
issue-trackingVulnCheck
github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb
technical-descriptionVulnCheck
github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb
technical-descriptionVulnCheck
abraxaslabs.tech/research/lago-invite-ato
third-party-advisoryVulnCheck
github.com/getlago/lago-api
productVulnCheck
View 1 more references
www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation
third-party-advisoryVulnCheck