{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "lago",
          "repo": "https://github.com/getlago/lago-api",
          "vendor": "getlago",
          "versions": [
            {
              "lessThanOrEqual": "1.55.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Abraxas Labs"
        }
      ],
      "datePublic": "2026-08-13T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s email, accept with an arbitrary password, and receive a JWT to access the victim\u0027s organizations, billing data, API keys and payment integrations."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "Authentication Bypass Using an Alternate Path or Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T11:30:51.565Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/getlago/lago-api/pull/6146"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://abraxaslabs.tech/research/lago-invite-ato"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/getlago/lago-api"
        },
        {
          "name": "VulnCheck Advisory: Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation"
        }
      ],
      "title": "Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-119420",
    "datePublished": "2026-10-30T11:30:51.565Z",
    "dateReserved": "2026-10-30T02:41:12.203Z",
    "dateUpdated": "2026-10-30T11:30:51.565Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}