What’s Vulnerable › Vulnerabilities

CVE-2026-70479: Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-08-04 · updated 2026-09-18
• Weakness: CWE-918

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.

Affected products

• open-webui: from 0.9.6 before 0.11.0 — fixed in 0.11.0

How to fix

Upgrade to a fixed version: open-webui 0.11.0. Check the vendor advisory for mitigations.

References

• https://github.com/open-webui/open-webui/commit/bef63a2ae915571d50d2722a635e8bfa753d7877
• https://github.com/open-webui/open-webui/pull/27526
• https://github.com/open-webui/open-webui/releases/tag/v0.11.0
• https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95
• https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95

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