CVE-2026-121939

Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking

9.2 Critical

Databasement before 1.10.9 contains an authentication bypass vulnerability in OAuthService::findOrCreateLocalUser() that links OIDC identities to local users by email without checking email_verified. Attackers can register an identity provider account with a victim's unverified email to log in as any user, including the super-admin, and retain access after password resets.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.54%Unchanged since Nov 5, 2026

What each source reports

CVE List Score used 9.2

Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking

Record: CVE-2026-121939
CVSS 4.0: 9.2 CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-290
Updated: 2026-11-04

EUVDEUVD-2026-116896 9.2

Record: EUVD-2026-116896
CVSS 4.0: 9.2 CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-04

GitHub AdvisoriesGHSA-3962-28xr-cf4g 9.2

Databasement before 1.10.9 contains an authentication bypass vulnerability in OAuthService:...

Record: GHSA-3962-28xr-cf4g
CVSS 4.0: 9.2 CriticalCVSS: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: 8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-290
Updated: 2026-11-04

NVD 9.2

Record: CVE-2026-121939
CVSS 4.0: 9.2 CriticalCVSS: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: 8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-290
Updated: 2026-11-04

OSV 9.2

Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking

Record: CVE-2026-121939
CVSS 4.0: 9.2 CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-290
Updated: 2026-11-05

Affected products

david-crty databasement

History

History
Recorded	Changed	Sources
Nov 5, 2026	aliases, references	EUVD, NVD, OSV
Nov 4, 2026	references	CVE List
Nov 4, 2026	published	EUVD
Nov 4, 2026	published	EUVD, NVD
Nov 4, 2026	aliases, references	GitHub Advisories
Nov 4, 2026	cwes, references, severity, title	CVE List
Nov 4, 2026	first indexed	EUVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-121939 is a critical vulnerability (CVSS 9.2) in David-crty Databasement, published November 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.54%, the 45th percentile. No source names a fixed version.