Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-59218

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than missing-email attempts and allowing unauthenticated account enumeration. This issue is fixed in version 0.10.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 15.1%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-59218


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