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CVE-2026-59218

Open WebUI: Account enumeration via observable login timing discrepancy PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
open-webui / open-webuiaffected < 0.10.0

CWE

CWE-208

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.