High severity7.7NVD Advisory· Published Jul 9, 2026· Updated Jul 10, 2026
CVE-2026-59221
CVE-2026-59221
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | >= 0.9.6, < 0.10.0 | 0.10.0 |
Affected products
2cpe:2.3:a:openwebui:open_webui:0.9.6:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:openwebui:open_webui:0.9.6:*:*:*:*:*:*:*
- (no CPE)range: <0.10.0
Patches
Vulnerability mechanics
References
6- github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849cnvdPatchWEB
- github.com/open-webui/open-webui/pull/26050nvdIssue TrackingPatchWEB
- github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4wnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-frvj-c5qp-xj4wghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59221ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.10.0nvdProductRelease NotesWEB
News mentions
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