CVE Watch5 ago 2026

CVE-2026-70493

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the built-in knowledge search

CVSS

6.5

Medio

EPSS

0.3%

p23

KEV

—

Exploit Today

0-100

Publicado: 4 ago 2026 · Última mod.: 5 ago 2026 · CWE-1333

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the built-in knowledge search path in backend/open_webui/tools/knowledge_fs.py and backend/open_webui/tools/builtin.py let a chat participant choose a pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every reachable file with no time limit, so a crafted pattern such as (x|x)*y and one matching uploaded file line can pin one CPU core and block the event loop. This causes availability impact for every other user of the affected worker. This issue is fixed in 0.11.0.

Referencias oficiales

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