CVE•Published 2026-07-09•Modified 2026-07-10•0 articles on news•5 live references•NVD data

CVE-2026-59218Openwebui · Open_webui

Vulnerability data via NVD (ingested)

CVSS v3.1

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-208Observable 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.

Timeline

Published 2026-07-09

Modified 2026-07-10

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-59218

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Openwebui Open Webui"

All exposed Openwebui Open Webui instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Open Webui"

HTTP body or banner mentions "Open Webui" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-59218