medium5.3
CVE-2026-59218
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | < 0.10.0 | 0.10.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | before 0.10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-7rw5-9f7q-xj36
- https://github.com/open-webui/open-webui/security/advisories/GHSA-7rw5-9f7q-xj36
- https://nvd.nist.gov/vuln/detail/CVE-2026-59218
- https://github.com/open-webui/open-webui/pull/26385
- https://github.com/open-webui/open-webui/commit/993e74912199c66c522f08ec81abe31d76985e39
- https://github.com/open-webui/open-webui/releases/tag/v0.10.0