Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata

Summary Open WebUI lets a client define a model inline on a chat request instead of selecting a saved workspace model. The knowledge attached to such an inline model was used as-is, without checking that the caller can read what it points at. Any authenticated user who knows another user's file i...

Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup

Summary A user with write access to one knowledge base could delete directories, and drop file embeddings, belonging to knowledge bases they do not control. The sync cleanup endpoint verified write access on the knowledge base named in the URL and then acted on the directory and file ids supplied...

Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Summary Any authenticated user with access to a terminal server could get script of their choosing to run in the Open WebUI origin itself. The HTML file preview rendered terminal-served files in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, and the file is serv...

Open WebUI: Any authenticated user can reach internal services and cloud metadata via NAT64-encoded URLs

Summary Open WebUI fetches user-supplied URLs on the server for RAG URL ingestion, URL-to-markdown conversion and web-search content retrieval, and decides whether a destination is allowed by asking whether its IP address is globally routable. That test operates on the literal IPv6 address and do...

Open WebUI: Users denied the image-generation permission can still generate images via chat completions

Summary An authenticated user whose features.imagegeneration permission has been revoked can still make the server generate images by sending the feature flag in a chat-completion request. The chat pipeline took the client-supplied features object at face value and never re-checked the permission...

Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering

Summary Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer's browser without a restricted resource loader. Any user who can place such a block where another user will see it can make that user's browser issue attacker-chosen outbound GET...

Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint

Summary DELETE /api/v1/chats/id cancelled a chat's in-flight tasks before it checked whether the caller was allowed to delete that chat. Any authenticated user who knew another user's chat id could therefore abort that user's running model response, title generation or tag generation. The deletio...

Open WebUI: Account takeover via OAuth token exchange accepting tokens issued to any client

Summary The OAuth token exchange endpoint accepts a raw provider access token and validates it by calling the provider's userinfo endpoint. A userinfo endpoint reports only that a token is valid, never which OAuth client it was issued to, and the endpoint performed no audience or client check of...

Open WebUI: Any member with write access to a standard channel can edit or delete other members' messages

Summary On standard channels, the message update and delete handlers accepted any caller holding write access on the channel, without checking that the caller wrote the message. Write access is the same grant a member needs in order to post, so every ordinary participant in a shared channel could...

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

Summary With the Playwright web loader enabled, Open WebUI opens user-submitted URLs in a real browser and validates the destination address before allowing the request. That check only ran for the top-level page request. Every other request the page issued was passed through unvalidated, so a pa...

Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service

Summary The OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is in WHITELISTURLS, meaning it requires no authentication. It decrypts the stored credential containing clientId, clientSecret, refreshtoken, sends a refresh request to the configured OAuth provider, a...

Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability

-- ABSTRACT ------------------------------------- Trend Micro's Zero Day Initiative has identified a vulnerability affecting the following products: Flowise - Flowise -- VULNERABILITY DETAILS ------------------------ Version tested: 3.1.1 Installer file: https://github.com/FlowiseAI/Flowise npm...

Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation

Summary Several organization billing endpoints accept attacker-controlled Stripe identifiers subscriptionId without verifying that the identifier belongs to the authenticated user's organization. This allows an authenticated attacker to perform unauthorized Stripe subscription operations on other...

Flowise: Unauthenticated Credential Abuse via Text-to-Speech Endpoint Allows Unauthorized Use of Private Chatflow TTS Credentials

Summary The /api/v1/text-to-speech/generate endpoint is whitelisted requires no authentication and accepts any chatflowId without checking whether the referenced chatflow is public. An unauthenticated attacker who knows a valid chatflow UUID can abuse that chatflow's TTS credential OpenAI or...

Flowise: Missing Authorization on Execution Update Endpoint

Flowise Security Audit Report Date: 2026-03-17 Researcher: Dimpal Jadhav [email protected] GitHub: https://github.com/Dimpyj1604 Target: FlowiseAI/Flowise latest main branch Version: [email protected] FINDING 1: Missing Authorization on Execution Update Endpoint Severity: HIGH CVSS 7.5...

Flowise: Cross-Workspace OAuth2 Credential Metadata Leak

Summary Three OAuth2 credential endpoints look up credentials by id alone with no workspaceId filter. Two of these endpoints callback, refresh are whitelisted from all authentication. This allows: 1. Cross-workspace credential access — Any authenticated user can initiate OAuth2 flows against...

Flowise: Incomplete Credential Redaction Exposes Secrets via API

Summary The GET /api/v1/credentials/:id endpoint decrypts stored credential data and returns it in the plainDataObj field of the API response. While a redactCredentialWithPasswordType function masks fields defined with type: 'password' in their component schema, many credential types store highly...

Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wide upsert history

Summary The GET /api/v1/upsert-history endpoint returns the entire server-wide upsert history response size 100MB instead of being scoped to the requesting user/tenant/workspace. The response includes sensitive configuration data e.g., Vector Store settings such as Qdrant Server URL and collectio...

Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store

Summary These endpoints accept a client-controlled credential parameter. The server loads credentials by id and uses them directly, without checking whether that credential belongs to the caller’s workspace. If an attacker knows another workspace’s credentialId, they can use that workspace’s Open...

Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python source without validation

Summary Flowise's CSVAgent interpolates an attacker-controlled segment of the csvFile data URI directly into a Python source-code template that is then executed by Pyodide. Because Pyodide is loaded with the default js bridge to globalThis which on Node.js exposes eval and dynamic import, the...

Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys

Summary Flowise on current main allows an authenticated user with documentStores:preview-process permission to trigger the S3 Directory document loader with attacker-controlled S3 object keys. The loader joins each returned S3 key with a temporary directory using path.jointempDir, key and writes...

Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure

Finding — Unauthorized Workspace Variables disclosure via $vars injection bypasses variables:view What’s wrong code locations - Variables for the active workspace are fetched without checking “variables:view” at this call site: flowise-src/ packages/components/src/utils.ts:932 - Runtime variables...

Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE

Summary The validatePythonCodeForDataFrame blacklist in packages/components/src/pythonCodeValidator.ts can be bypassed with Unicode homoglyph identifiers, allowing arbitrary Python execution inside Pyodide and full OS command execution on the Flowise host via Pyodide's js module interop. This...

Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)

Summary The mitigation shipped for CVE-2025-8943 blocks the -y and --yes flags on npx to stop auto-installation of arbitrary packages. That flag filter works. The environment-variable check in the same patch denies only four variable names by exact string match, and npm reads its configuration...

Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentflows:delete` and `chatflows:delete` to delete each other’s flow type

summary: In Flowise, DELETE /api/v1/chatflows/:id authorizes requests with checkAnyPermission'chatflows:delete,agentflows:delete'. Possession of either permission is sufficient to reach the delete path. The delete logic does not validate the target resource type, allowing a caller with only...

Flowise RCE via SQLite Record Manager Node

============================================================================= Security Advisory elttam Topic: Flowise RCE via SQLite Record Manager Node Module: FlowiseAI/Flowise Disclosed: 24-Apr-2026 Credits: Alex Brown Affects: FlowiseAI/Flowise 3.1.2 I. Background Flowise AI is an open-source...

Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API

Summary The POST /api/v1/prediction/:id endpoint — which is unauthenticated whitelisted in WHITELISTURLS — accepts an overrideConfig object in the request body. This object is unconditionally spread into the internal flowConfig and flowData objects at two locations in the codebase without checkin...

Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses

Summary Flowise's HTTP security module httpSecurity.ts fails to normalize IPv4-mapped IPv6 addresses e.g., ::ffff:127.0.0.1, ::ffff:169.254.169.254 before checking them against the deny list. Due to an ipaddr.js kind mismatch ipv6 vs ipv4, all IPv4 CIDR deny rules are silently skipped for...

Flowise: Remote Code Execution Vulnerability in CSVAgent

Summary The CSVAgent node was observed to allow users to write Python code which gets executed via pyodide. The original intent was to allow users to utilise the pandas library for CSV processing. Although there is a denylist that checks for dangerous Python constructs from being passed in, panda...

Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified

UPDATE 2026-05-20: Full RCE as root VERIFIED This is not theoretical — a Meterpreter reverse shell session as root has been established on Flowise 3.1.2. Verified Exploit Chain 1. Python code injection via base64string = "$base64String" CSVAgent.ts line 161 2. Pyodide js bridge provides access to...

Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

Summary A sandbox escape vulnerability in executeJavaScriptCode allows any authenticated user to execute arbitrary system commands as root on the Flowise server. The function accepts caller-provided nodeVMOptions that override the default sandbox security settings via JavaScript's spread operator...

Flowise Sandbox Escape to RCE

============================================================================= Security Advisory elttam Topic: Flowise JavaScript Sandbox Escape Module: FlowiseAI/Flowise, FlowiseAI/nodevm Disclosed: 11-Apr-2026 Credits: Luke Jahnke and Alex Brown Affects: FlowiseAI/Flowise 3.1.1, FlowiseAI/nodevm...

Flowise: Missing authorization on `/api/v1/files` allows low-privileged API keys to list and delete files across workspaces within the same organization

summary: In Flowise, the /api/v1/files route is protected only by the feat:files feature gate and does not enforce checkPermission... on either GET or DELETE. As a result, any authenticated API key within the organization, even one with unrelated permissions, can list and delete files belonging t...

Flowise RCE via TypeORM DataSource

============================================================================= Security Advisory elttam Topic: Flowise RCE via TypeORM DataSource Module: FlowiseAI/Flowise Disclosed: 15-Apr-2026 Credits: Alex Brown Affects: FlowiseAI/Flowise 3.1.2 I. Background Flowise AI is an open-source, low-co...

Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration

Summary The OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design it is in the public whitelist and performs a server-side HTTP request to a credential-controlled URL accessTokenUrl without SSRF protections. In runtime validation, this...

Flowise: IDOR vulnerability exists at the GET /api/v1/organization/customer-default-source endpoint

Summary An Insecure Direct Object Reference IDOR vulnerability exists at the GET /api/v1/organization/customer-default-source endpoint. This flaw allows an authenticated attacker to bypass authorization checks and retrieve sensitive payment and profile information of other customers by manipulati...

python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees

Summary If an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of .example.com, python-cryptography's verifier accepts which allows escaping outside of the permitted names. PoC !/usr/bin/env python3 """Standalone PoC: pyca's...

python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

Summary When resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents...

cryptography: PKCS#7 EnvelopedData decryption exposes a Bleichenbacher oracle through distinguishable errors and timing

Summary pkcs7decryptder, pkcs7decryptpem, and pkcs7decryptsmime reported the outcome of decrypting a RecipientInfo's encryptedKey in several distinguishable ways, one of which disclosed the exact length recovered from the RSA operation. The same distinction was also observable by timing. An...

Guzzle: Noncanonical host can bypass host-based checks

Impact In affected versions, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPTURL to the URI exactly as written and push that Host into CURLOPTHTTPHEADER; StreamHandler does the same through fopen. libcurl then parses the...

Guzzle: Noncanonical cookie domain keeps subdomain scope

Impact SetCookie::matchesDomain gives every subdomain of a cookie Domain that cookie unless it recognizes the Domain as an IP literal or a numeric host, and it decides that from the domain's own text, so two spellings a transport reads as an address keep subdomain scope. On 7.15, hexadecimal and...

AIOHTTP: Out-of-bounds heap read in C HTTP response parser error path (malformed chunked response)

Summary An out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response. Impact An attacker controlled server, or possibly an accidental response could trigger a DoS in the client. Workaround If unable to upgrade, the Python parser is...

AIOHTTP: HTTP request smuggling via WebSocket upgrade

Summary The HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. Impact If using the server-side component, it may be possible for an attacker to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. AIOHTT is unawar...

AIOHTTP: WebSocket client accepts compressed frames without negotiated permessage-deflate

Summary The client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated. Impact A client may unexpectedly decompress WebSocket frames when explicitly opted out. This could lead to additional CPU/memory consumption, but is unlikely to ...

Sequelize: SQL Injection (Oracle DB)

Summary SQL Injection is possible with strings only if dialect is set to oracle. The vulnerability was confirmed on Sequelize v6.37.3. Details The escape function defined in sql-string.js does not escape quotes if the value starts with TOTIMESTAMP or TODATE. javascript else if dialect === 'oracle...

Hono: ReDoS in CORS middleware via Access-Control-Request-Headers

Summary The built-in CORS middleware hono/cors parses the attacker-controlled Access-Control-Request-Headers request header during a preflight OPTIONS request using a regular expression whose running time is quadratic in the input length. A single request carrying a long run of whitespace can...

GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count

Summary Commit.count forwards kwargs into revlist with no checkunsafeoptions guard the guard exists only in the sibling iteritems, commit.py:341. git rev-list --output= opens and truncates the target file to 0 bytes before revision parsing, so countoutput='/victim' destroys/blanks an arbitrary...

GitPython: Incomplete unsafe_git_archive_options denylist omits --add-file / --add-virtual-file, enabling arbitrary file read via Repo.archive()

Target: gitpython-developers/GitPython Tested: HEAD 07e80555 2026-07-25, latest release 3.1.55, git version 2.50.1 Summary Repo.archive does call the option guard, so this is not a missing-guard report. The guard is present and working; the denylist it consults is incomplete. python...

GitPython: Unguarded git option forwarding in IndexFile.checkout() and TagReference.create() enables arbitrary file overwrite and arbitrary file read

Target: gitpython-developers/GitPython Tested: HEAD 07e80555 2026-07-25, latest release 3.1.55, git version 2.50.1 Reported instances: 2 exploitable, from a sweep of 14 unguarded call sites Summary GitPython blocks dangerous git options through Git.checkunsafeoptions, gated per method by an...

ip-address: Address4 decodes leading-zero octets as decimal while resolvers decode them as octal, allowing SSRF and trust-boundary bypass

Summary Address4 accepts an octet written with a leading zero and decodes it as decimal, while the WHATWG URL host parser, inetaton, and getaddrinfo all decode a leading zero as octal. The library and the network stack therefore disagree about which host a string names. new Address4'012.0.0.1'...