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CVE

CVE-2026-86117

Coolify through 4.3.17 OAuth Account Takeover via Unverified Email Matching
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CVE

CVE-2026-86117

Coolify through 4.3.17 OAuth Account Takeover via Unverified Email Matching

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.2
-
4.0
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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86117.json, https://nvd.nist.gov/vuln/detail/CVE-2026-86117, https://www.vulncheck.com/advisories/coolify-through-4.3.17-oauth-account-takeover-via-unverified-email-matching, https://github.com/coollabsio/coolify, https://github.com/coollabsio/coolify/blob/v4.3.17/app/Http/Controllers/OauthController.php, https://github.com/coollabsio/coolify/blob/v4.3.17/routes/web.php, https://github.com/geo-chen/oss/blob/main/coolify.md

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00673%
EPSS Percentile
0.50614%
Introduced Version
0
Fix Available
5ff21103974a30e107ce046190fb478658a214e7

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