CVE-2026-56399— Open WebUI - Server-Side Request Forgery via Location Redirect in /api/v1/retrieval/process/web
Possible ATT&CK Techniques 3AI
T1071.001 · Web Protocols T1210 · Exploitation of Remote Services T1590.004 · Network TopologyGet alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-56399
Vulnerability Information
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Vulnerability Title
Open WebUI - Server-Side Request Forgery via Location Redirect in /api/v1/retrieval/process/web
Source: NVD (National Vulnerability Database)
Vulnerability Description
Open WebUI before 0.6.27 contains a server-side request forgery vulnerability in the /api/v1/retrieval/process/web endpoint that allows authenticated users to bypass SSRF protections. Attackers can manipulate URL parameters with location redirect headers to access internal services and potentially execute commands via instance secrets.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-webui | open-webui | 0 ~ 0.6.27 | - |
II. Public POCs for CVE-2026-56399
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-56399 (2)
IV. Related Vulnerabilities
Same product: open-webui
- CVE-2026-54007
Open WebUI: Cross-origin postMessage confirmation bypass via - CVE-2026-54006
Open WebUI: Calendar event re-parenting allows writing event - CVE-2026-54008
Open WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_ - CVE-2026-54009
Open WebUI: Cross-user file disclosure via /api/chat/complet - CVE-2026-54010
Open WebUI: Forged chat-file link allows cross-user file rea
Same vendor: open-webui
- CVE-2026-54007
Open WebUI: Cross-origin postMessage confirmation bypass via - CVE-2026-54006
Open WebUI: Calendar event re-parenting allows writing event - CVE-2026-54008
Open WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_ - CVE-2026-54009
Open WebUI: Cross-user file disclosure via /api/chat/complet - CVE-2026-54010
Open WebUI: Forged chat-file link allows cross-user file rea
Same weakness: CWE-918
- CVE-2026-14336
PIA OIDC签发者验证缺陷致SSRF与伪造认证 - CVE-2026-55791
Craft CMS: Blind SSRF and Arbitrary JavaScript Injection via - CVE-2026-24242
NVIDIA Megatron Bridge 存在 SSRF 漏洞可导致信息泄露 - CVE-2025-36324
Vulnerabilities found in Watson Data Intelligence - CVE-2026-10129
SSRF via HTTP Redirect Following in Langflow API Request Com
V. Comments for CVE-2026-56399
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