{"id":"CVE-2026-56215","title":"Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning","summary":"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 vict…","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","cvssSource":"cna","cwe":["CWE-639"],"vendor":"Capgo","product":"Capgo","affected":["Capgo < 12.128.12"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-24T18:08:07.049529Z"},"exploitAvailable":true,"published":"2026-06-20","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:05:36.024Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56215","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww","label":"GitHub Security Advisory (GHSA-wqc6-fhwf-qpww)"},{"url":"https://www.vulncheck.com/advisories/capgo-account-merge-via-poisoned-public-users-email-in-sso-provisioning","label":"VulnCheck Advisory: Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning"}],"tags":["cve.org","exploit-available"],"epss":0.00388,"epssPercentile":0.33199,"ingestedAt":"2026-11-08T14:51:22.368Z","slug":"CVE-2026-56215","body":"## Overview\n\nCapgo 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.\n\n## Affected\n\n- `Capgo < 12.128.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":58,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}