PT-2026-56895 · Openwebui · Open-Webui

Published 2026-07-09 · Updated 2026-07-09 · CVE-2026-59221

Mitre

CVSS v3.1

7.7

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, sanitize proxy path in backend/open webui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks and be decoded by the upstream terminal server. This issue is fixed in version 0.10.0.

Fix

SSRF

Path traversal

Weakness Enumeration

CWE-918

CWE-22

Related Identifiers

CVE-2026-59221

Affected Products

Open-Webui

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59221 · Security Note
• https://github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849c · Note
• https://github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4w · Note
• https://github.com/open-webui/open-webui/pull/26050 · Note
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0 · Note