CVE•Published 2026-07-15•Modified 2026-07-16•1 article on news•4 live references•NVD data
CVE-2026-56400Openwebui · Open_webui
Vulnerability data via NVD (ingested)
CVSS v3.1
8.3
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with allow_origins=* and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests from attacker-controlled websites when an admin user visits them.
Timeline
Published 2026-07-15
Modified 2026-07-16
External references
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). Live host counts are a Premium feature.
Shodan · vuln tag
vuln:CVE-2026-56400Hosts 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-2026-56400Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-56400Censys host search filtered to this CVE id.
grep.app
CVE-2026-56400Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-56400GitHub code search for direct mentions.
Google dork
"CVE-2026-56400" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-56400 on GitHub.