CVE-2026-86117
highCoolify through 4.3.17 contains an authentication bypass vulnerability in the OAuth callback handler that signs users into existing accounts based solely on em…
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/coollabsio/coolify disclosure@vulncheck.com
- https://github.com/coollabsio/coolify/blob/v4.3.17/app/Http/Controllers/OauthController.ph... disclosure@vulncheck.com
- https://github.com/coollabsio/coolify/blob/v4.3.17/routes/web.php disclosure@vulncheck.com
- https://github.com/geo-chen/oss/blob/main/coolify.md disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/coolify-through-4.3.17-oauth-account-takeover-via-unv... disclosure@vulncheck.com