CRITICAL 9.2 NVD
CVE-2026-86117
Coolify through 4.3.17 contains an authentication bypass vulnerability in the OAuth callback handler that signs users into existing accounts based solely on ema
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. 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.
References
- https://github.com/coollabsio/coolify
- https://github.com/coollabsio/coolify/blob/v4.3.17/app/Http/Controllers/OauthController.ph
- https://github.com/coollabsio/coolify/blob/v4.3.17/routes/web.php
- https://github.com/geo-chen/oss/blob/main/coolify.md
- https://www.vulncheck.com/advisories/coolify-through-4.3.17-oauth-account-takeover-via-unv
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-09-05 via NVD.
Risk Timeline
CVE Disclosed2026-09-05 · -1 days ago
Remediation Resources
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