CVE-2026-54014— Open WebUI: Sibling-Prefix Path Traversal via /cache/{path} in open-webui/open-webui
Possible ATT&CK Techniques 1AI
T1083 · File and Directory DiscoveryAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-webui | open-webui | < 0.9.6 | affected |
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I. Basic Information for CVE-2026-54014
Vulnerability Information
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Vulnerability Title
Open WebUI: Sibling-Prefix Path Traversal via /cache/{path} in open-webui/open-webui
Source: CVE Program / CVE List V5
Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, a path traversal vulnerability exists in open-webui's cache file serving endpoint that allows any authenticated user to read files from sibling directories outside the intended cache directory, by exploiting an incomplete startswith containment check that lacks a trailing path separator. The root cause is that serve_cache_file() in open_webui/main.py validates the resolved path with file_path.startswith(os.path.abspath(CACHE_DIR)) — without appending os.sep. This allows any path resolving to a sibling directory whose name begins with cache (e.g. cache_sibling, cache_backup, cached_models) to pass validation. This vulnerability is fixed in 0.9.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Open WebUI 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open WebUI是Open WebUI团队开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.9.6之前版本存在路径遍历漏洞，该漏洞源于缓存文件服务端点的startswith检查不完整且缺少尾随路径分隔符，可能导致任何已认证用户读取预期缓存目录之外的同级目录中的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-webui | open-webui | < 0.9.6 | - |
II. Public POCs for CVE-2026-54014
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-54014 (1)
Same Patch Batch · open-webui · 2026-06-23 · 15 CVEs total
| CVE-2026-54011 | 8.7 HIGH | Open WebUI: Stored XSS in Mermaid Markdown Preview |
| CVE-2026-54008 | 8.5 HIGH | Open WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_url` |
| CVE-2026-54010 | 8.3 HIGH | Open WebUI: Forged chat-file link allows cross-user file read and deletion |
| CVE-2026-54018 | 7.7 HIGH | Open WebUI: SSRF Protection Bypass in Playwright Web Loader via HTTP Redirects |
| CVE-2026-54013 | 7.6 HIGH | Open WebUI: Stored XSS to Account Takeover via Model Profile Images in Open WebUI |
| CVE-2026-54012 | 7.1 HIGH | Open WebUI: Forged model meta.knowledge allows cross-user file read and deletion |
| CVE-2026-54009 | 6.5 MEDIUM | Open WebUI: Cross-user file disclosure via /api/chat/completions image_url field |
| CVE-2026-54019 | 6.5 MEDIUM | Open WebUI: RAG ACL Bypass in Milvus Multitenancy Mode |
| CVE-2026-54015 | 6.4 MEDIUM | Open WebUI: Prompt history IDOR: unbound history_id allows cross-prompt read and deletion |
| CVE-2026-54021 | 6.3 MEDIUM | Open WebUI: Authenticated users can target arbitrary configured Ollama backends via unguar |
| CVE-2026-54022 | 5.3 MEDIUM | Open WebUI: Any authenticated user can read other users' private notes via Socket.IO |
| CVE-2026-54016 | 4.3 MEDIUM | Open WebUI: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base F |
| CVE-2026-54006 | 4.3 MEDIUM | Open WebUI: Calendar event re-parenting allows writing events into another user's calendar |
| CVE-2026-54007 | Open WebUI: Cross-origin postMessage confirmation bypass via action:submit |
IV. Related Vulnerabilities
Same product: open-webui
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Open WebUI: Stored XSS via unescaped KaTeX render-error fall - CVE-2026-70491
Open WebUI: Tool source code disclosed to read-only users vi
Same vendor: open-webui
- CVE-2026-59714
Open WebUI: Cross-channel message overwrite via chat complet - CVE-2026-70494
Open WebUI: A folder write-collaborator can permanently dele - CVE-2026-70493
Open WebUI: Any authenticated user can stall a worker via a - CVE-2026-70492
Open WebUI: Stored XSS via unescaped KaTeX render-error fall - CVE-2026-70491
Open WebUI: Tool source code disclosed to read-only users vi
Same weakness: CWE-22
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V. Comments for CVE-2026-54014
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