{"id":"CVE-2026-56215","state":"PUBLISHED","title":"Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning","description":"Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.","publishedAt":"2026-06-20T00:14:38.298Z","updatedAt":"2026-06-24T18:08:25.417Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Capgo Capgo"],"affected":[{"vendor":"Capgo","product":"Capgo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"12.128.12","versionType":"semver"},{"version":"12.128.12","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww","https://www.vulncheck.com/advisories/capgo-account-merge-via-poisoned-public-users-email-in-sso-provisioning"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56215.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56215","state":"PUBLISHED","datePublished":"2026-06-20T00:14:38.298Z","dateUpdated":"2026-06-24T18:08:25.417Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-06-19T21:43:24.737Z"},"containers":{"cna":{"title":"Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning","descriptions":[{"lang":"en","value":"Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account."}],"affected":[{"vendor":"Capgo","product":"Capgo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"12.128.12","versionType":"semver"},{"version":"12.128.12","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww","name":"GHSA Advisory GHSA-wqc6-fhwf-qpww","tags":["vendor-advisory"]},{"url":"https://www.vulncheck.com/advisories/capgo-account-merge-via-poisoned-public-users-email-in-sso-provisioning","name":"VulnCheck Advisory: Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"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:L","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-06-20T00:14:38.298Z"},"datePublic":"2026-05-08T00:00:00.000Z","x_generator":{"engine":"vulncheck"},"credits":[{"lang":"en","value":"Judel777","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-24T18:08:07.049529Z","id":"CVE-2026-56215","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-24T18:08:25.417Z"}}]}}}