CVE-2026-59221

highCVSS 7.7covered by 1 sourcefirst seen 2026-07-09

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.

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Exploitation outlook

Low exploitation risk0.36% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-59221: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9…nvd · 2026-07-09

External references

NVD record for CVE-2026-59221

CVE.org record

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