High severity7.7GHSA Advisory· Published May 15, 2026· Updated May 18, 2026
CVE-2026-45338
CVE-2026-45338
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.
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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 | < 0.9.0 | 0.9.0 |
Affected products
2<= 0.8.12+ 1 more
- (no CPE)range: <= 0.8.12
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: <0.9.0
Patches
Vulnerability mechanics
References
4- github.com/open-webui/open-webui/security/advisories/GHSA-24c9-2m8q-qhmhnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-24c9-2m8q-qhmhghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-45338ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.9.0ghsaWEB
News mentions
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