VULNERABILITY INTELLIGENCE
CVE-2026-59221
CVSS score7.7 HIGH
EPSS probability0.48%
CISA KEVNot currently listed
Published2026-07-09
Last modified2026-07-10
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Description
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.
Weakness classification
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-918: Server-Side Request Forgery (SSRF)
Primary references
- security-advisories@github.com — Patch
- security-advisories@github.com — Issue Tracking, Patch
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Exploit, Mitigation, Vendor Advisory
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Mitigation, Vendor Advisory