1385 matches found
Server-side Request Forgery (SSRF)
Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the path parameter in the terminal server proxy route. An attacker can access sensitive files and internal endpoints by supplying specially crafted, double-encoded travers...
Open WebUI: Sibling-Prefix Path Traversal via /cache/{path}
Summary 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...
GHSA-J2C8-V969-8R5C Open WebUI: Sibling-Prefix Path Traversal via /cache/{path}
Summary 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...
GHSA-V2QM-5WXJ-QHJ7 Open WebUI: Stored XSS to Account Takeover via Model Profile Images
Stored XSS to Account Takeover via Model Profile Images in Open WebUI Affected: Open WebUI tags. On the output side, users.py added a MIME allowlist check and X-Content-Type-Options: nosniff. The fix was applied to UserUpdateForm, UpdateProfileForm, and later to ChannelWebhookForm. Three models...
Open WebUI: Stored XSS to Account Takeover via Model Profile Images
Stored XSS to Account Takeover via Model Profile Images in Open WebUI Affected: Open WebUI tags. On the output side, users.py added a MIME allowlist check and X-Content-Type-Options: nosniff. The fix was applied to UserUpdateForm, UpdateProfileForm, and later to ChannelWebhookForm. Three models...
Protection Mechanism Failure
Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Protection Mechanism Failure via the profileimageurl field in the model metadata process. An attacker can execute arbitrary JavaScript in the context of another user's session by storing a crafted SVG payload...
Open WebUI: Forged model meta.knowledge allows cross-user file read and deletion
Summary Open WebUI lets a user who can create, update, or import workspace models store arbitrary meta.knowledge entries on their model without checking whether they own or can read the referenced files. Open WebUI then treats meta.knowledge entries of type file as an authorization source in two...
Open WebUI: Stored XSS in Mermaid Markdown Preview
Summary Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working paylo...
GHSA-V8QJ-HXV7-MGVV Open WebUI: Stored XSS in Mermaid Markdown Preview
Summary Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working paylo...
Cross-site Scripting (XSS)
Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS in the Markdown file preview process when rendering Mermaid blocks with a permissive security configuration. An attacker can execute arbitrary JavaScript in the context of the victim'...
Open WebUI: Forged chat-file link allows cross-user file read and deletion
Summary Open WebUI v0.9.5 lets an authenticated user attach arbitrary fileid values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants themselves read access, hasaccesstofile treats the victim file as accessible...
GHSA-226F-F24G-524W Open WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_url` (incomplete-fix sibling of CVE-2026-45401)
Summary backend/openwebui/utils/oauth.py::processpictureurl v0.9.5, lines 1435-1470 calls validateurlpictureurl on the initial URL only, then invokes aiohttp.ClientSession.getpictureurl, ... without allowredirects=False. aiohttp's default is allowredirects=True, maxredirects=10; the function does...
Server-side Request Forgery (SSRF)
Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the processpictureurl function. An attacker can access internal network resources and exfiltrate sensitive data by submitting a crafted OAuth profile image URL that redirec...
Origin Validation Error
Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Origin Validation Error through the postMessage process. An attacker can execute unauthorized actions and trigger backend API calls under the victim's authenticated session by sending crafted cross-origin...
GHSA-3VV5-8XXP-4F55 Open WebUI: Cross-origin postMessage confirmation bypass via action:submit
Summary The chat message listener allows non-same-origin input:prompt and action:submit messages, so an external site can set prompt text and trigger submitPrompt in an authenticated victim session. I validated this with a cross-origin attacker page that auto-posted messages and caused unauthoriz...
PT-2026-50482
Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description An authenticated user can attach arbitrary file id values to their own chat messages because the system fails to verify if the user owns or has read access to those files. By sharing the chat and...
PT-2026-50488
Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description Open WebUI contains a Broken Object Level Authorization BOLA issue in the builtin search knowledge files function. BOLA occurs when an application does not properly verify if a user has permission...
PT-2026-50486
Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description A path traversal issue exists in the cache file serving endpoint '/cache/path:path' that allows authenticated users with the role of user or admin to read files from sibling directories outside th...
GHSA-RGXP-2HWP-JWGG vulnerabilities
Vulnerabilities for packages: open-webui...
CVE-2026-25087 vulnerabilities
Vulnerabilities for packages: open-webui...