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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-59218

Open WebUI: Account enumeration via observable login timing discrepancy

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

open-webui open-webui

  • < 0.10.0affected

References