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Advisories

Open WebUI 0.11.0 before 0.11.4 ReDoS via grep_knowledge_files Event Loop

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severity
high
date
Affecting

  • open-webui >= 0.11.0, < 0.11.4

CWE
  • CWE-1333 Inefficient Regular Expression Complexity
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
yousif-IQ, Classic298
Description
Open WebUI from 0.11.0 before 0.11.4 contains a regular expression denial of service vulnerability that allows authenticated users to stall server workers via file search patterns. Attackers can instruct the model to call grep_knowledge_files or grep_chat_files with a catastrophically backtracking regex, blocking the event loop for two seconds per repeated call.

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