CVE-2026-109295 — Open WebUI 0.11.0 before 0.11.4 ReDoS via grep_knowledge_files Event Loop
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 patter…
Published: 2026-10-12 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 2bc2f154a9513fd639cf69e09a5cddfaedf57bdc