Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck

CVE-2026-121939Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking

High 8.1

In plain English

A high-severity authentication bypass by spoofing in Databasement from David-Crty. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.5%top 54.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
David-Crty	Databasement	0 – before 1.10.9

Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-mh6w-2cch-w8v8) vendor-advisory
https://github.com/David-Crty/databasement/commit/b7f4079c02b7ce3f1cf2844de182e809636c3382 patch
Databasement v1.10.9 Release Notes release-notes
https://github.com/David-Crty/databasement/blob/v1.10.8/app/Services/OAuthService.php#L55-L68 technical-description
VulnCheck Advisory: Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking third-party-advisory