CVE-2026-56400
CVE-2026-56400
9.0
CriticalPublished:
Last updated:
Source:disclosure@vulncheck.com
Analyzed
Weakness (CWE)
CVSS Vector
v4.0- Attack Vector
- Network
- Attack Complexity
- High
- Attack Requirements
- Present
- Privileges Required
- None
- User Interaction
- Passive
- Confidentiality (Vulnerable)
- High
- Integrity (Vulnerable)
- High
- Availability (Vulnerable)
- High
- Confidentiality (Subsequent)
- High
- Integrity (Subsequent)
- High
- Availability (Subsequent)
- High
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.
References
disclosure@vulncheck.com
https://github.com/open-webui/open-webui/security/advisories/GHSA-6xcp-7mpr-m7wmdisclosure@vulncheck.com
https://www.vulncheck.com/advisories/open-webui-remote-code-execution-via-cors-misconfiguration-and-session-validation134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/open-webui/open-webui/security/advisories/GHSA-6xcp-7mpr-m7wm