CVEvulnerability
CVE-2026-86117
9.2 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-09-05
- Last modified
- 2026-09-10
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.2 CRITICAL — CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-287
Description
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.
Related
Weakness · CWE (1)
- CWE-287 Improper Authentication weakness
References
- https://github.com/coollabsio/coolify github.com
- https://github.com/coollabsio/coolify/blob/v4.3.17/app/Http/Controllers/OauthController.php github.com
- https://github.com/coollabsio/coolify/blob/v4.3.17/routes/web.php github.com
- https://github.com/geo-chen/oss/blob/main/coolify.md github.com
- https://www.vulncheck.com/advisories/coolify-through-4.3.17-oauth-account-takeover-via-unverified-email-matching www.vulncheck.com