{"id":"CVE-2026-86117","title":"Coolify through 4.3.17 contains an authentication bypass vulnerability in the OAuth callback handler that signs users into existing accounts based solely on email address without verifying provider assertions or binding OAuth identities.…","summary":"Coolify through 4.3.17 contains an authentication bypass vulnerability in the OAuth callback handler that signs users into existing accounts based solely on email address without verifying provider assertions or binding OAuth identities.…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-287"],"vendor":"coollabsio","product":"coolify","affected":["coolify <= 4.3.17"],"published":"2026-09-05","updated":"2026-09-10","sourceUpdated":"2026-09-10T16:18:01.553","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86117","references":[{"url":"https://github.com/coollabsio/coolify","label":"disclosure@vulncheck.com"},{"url":"https://github.com/coollabsio/coolify/blob/v4.3.17/app/Http/Controllers/OauthController.php","label":"disclosure@vulncheck.com"},{"url":"https://github.com/coollabsio/coolify/blob/v4.3.17/routes/web.php","label":"disclosure@vulncheck.com"},{"url":"https://github.com/geo-chen/oss/blob/main/coolify.md","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/coolify-through-4.3.17-oauth-account-takeover-via-unverified-email-matching","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T14:24:56.886508Z"},"epss":0.00422,"epssPercentile":0.36175,"ingestedAt":"2026-09-06T07:51:56.004Z","slug":"CVE-2026-86117","body":"## Overview\n\nCoolify through 4.3.17 contains an authentication bypass vulnerability in the OAuth callback handler that signs users into existing accounts based solely on email address without verifying provider assertions or binding OAuth identities. Attackers can register a victim's email address on any enabled OAuth provider to obtain authenticated sessions as that user, bypassing password requirements and two-factor authentication.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}