ZDI-CAN-28258: ZDI-26-031: (0Day) Open WebUI PIP install_frontmatter_requirements Command Injection Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Open WebUI. Authentication is required to exploit this vulnerability. The specific flaw exists within the installfrontmatterrequirements function.The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Open WebUI. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-0765.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-28258?
ZDI-CAN-28258 is considered to have a high severity due to its potential for remote code execution.
How do I fix ZDI-CAN-28258?
To fix ZDI-CAN-28258, ensure that your Open WebUI installations are updated to the latest secure version provided by the vendor.
Who is affected by ZDI-CAN-28258?
Any installations of Open WebUI that have not applied relevant security updates are affected by ZDI-CAN-28258.
What type of attack does ZDI-CAN-28258 allow?
ZDI-CAN-28258 allows remote attackers to execute arbitrary code on vulnerable Open WebUI installations.
Is authentication required to exploit ZDI-CAN-28258?
Yes, authentication is required to exploit the ZDI-CAN-28258 vulnerability.