Budibase: Unauthenticated user information disclosure via public tenant user lookup endpoint

Summary The Budibase Worker service exposes a public, unauthenticated API endpoint GET /api/global/users/tenant/:id that returns sensitive user information including tenantId, userId, email, and ssoId. The endpoint is registered in the PUBLICENDPOINTS list with a TODO comment acknowledging it...

Budibase: Unauthenticated REST Datasource Credential Theft via Cross-Origin Auth Leak

Summary Budibase attaches a REST datasource's stored credentials Bearer/Basic tokens and static headers to an outgoing request before it decides which host the request goes to, and never checks that the destination host matches the datasource. A query's request path can be pointed at any host via...

Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored

Summary Cloudreve WOPI access tokens are generated as ., but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view o...

Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified

Summary Budibase's OIDC SSO login links an incoming SSO identity to an existing Budibase account by email address alone, without ever checking the emailverified claim of the OIDC ID token. Budibase first tries to match the IdP sub; when that misses any fresh attacker IdP account it silently falls...

Budibase: DNS rebinding SSRF bypasses remain in OpenAPI import and REST query execution

Impact A builder-level user can make Budibase issue server-side HTTP requests to loopback or private-network targets by using DNS rebinding against two outbound fetch paths that are still not pinned to the validated DNS answer. The first path is OpenAPI query import. It validates the supplied...

Budibase: S3 presigned URL endpoint authorization regression in v3.39.4 allows BASIC users to obtain S3 PutObject presigned URLs

Impact In Budibase v3.39.4, a regression in the authorization level for the S3 attachment upload endpoint allows any BASIC app user to obtain S3 PutObject presigned URLs. The endpoint uses TABLE/WRITE permission level instead of the intended BUILDER level defined in v3.39.3. Additionally, the...

Budibase: Server Filesystem Existence/Read Oracle via Builder-Controlled MongoDB tlsCertificateKeyFile

Summary When creating a MongoDB datasource, Budibase passes the tlsCertificateKeyFile and tlsCAFile fields straight to the MongoDB driver as server-side file paths. On Budibase Cloud a customer cannot place files on the server, so these fields only let a builder reference arbitrary absolute paths...

Budibase: SQL Injection via `multipleStatements: true`

Summary A critical SQL injection vulnerability was discovered in Budibase's MySQL integration that allows remote attackers to execute arbitrary SQL commands. Details Vulnerability Type SQL Injection Description The MySQL integration component in Budibase is configured with multipleStatements: tru...

Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session)

Summary POST /api/v2/email on the account portal account.budibase.app starts an email-change workflow using a client-supplied accountId that is not validated against the authenticated session. A logged-in attacker supplies a victim's accountId and an email address they control; the verification...

Budibase: SSO OAuth2 Token Leakage via User Metadata Endpoints to Power-Role Users

Summary The /api/users/metadata and /api/users/metadata/:id endpoints in @budibase/server return full global user profiles to any user with POWER role or above. For SSO-authenticated users OIDC, Google, the response includes oauth2.accessToken and oauth2.refreshToken fields, leaking identity...

Budibase: Missing RBAC on GET /api/global/groups allows BASIC users to enumerate all tenant groups and role mappings

Summary The GET /api/global/groups endpoint on the worker service has no role-based authorization middleware. Any authenticated user including BASIC role can enumerate all user groups in the tenant, including their role mappings, user memberships, builder permissions, and the isDefault flag. Step...

Budibase: Privilege escalation via public role assignment API missing app-level authorization

Summary Budibase 3.39.19 commit 03fbabae4 is affected by a privilege-escalation / missing-authorization flaw in the public role-assignment API. An app-scoped builder a user who builds only specific apps — user.builder.apps = appA, not a global builder or admin can grant themselves builder access ...

react-server-dom: Denial of Service in Server Functions

Impact A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to out-of-memory exceptions or excessive CPU usage. We recommend updating immediately. The vulnerability exists in versions 19.0.0 through 19.0.7,...

OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback

Summary A pre-authentication remote code execution vulnerability affects OpenAM. The remote authentication endpoint /authservice, PLL accepts an XML element that names an arbitrary Java class, which the server then loads and instantiates without validation. On a default configuration this is...

OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page

Description The OAuth2/OIDC consent page rendered for display=wap authorize requests reflected several request-derived values into the HTML response without escaping. An attacker who induces a user with an active OpenAM session to follow a crafted authorize link can execute arbitrary JavaScript i...

OpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypass

Summary The GHSA-6c99-87fr-6q7r fix wrapped WebAuthn authenticator deserialization in an ObjectInputFilter meant to allow only AuthenticatorImpl, but it short-circuits to ALLOWED for any object at stream depth 1. Because the Java serialization filter is consulted for every class in the graph and...

open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

AI assistance was used to help inspect the code and prepare this report. Summary The fix for GHSA-r2wg-2mcr-66rv is incomplete in v0.9.6 and current main. backend/openwebui/routers/terminals.py documents sanitizeproxypath as decoding until stable, but the implementation stops after 8 unquote...

Open WebUI: Arena task endpoints can bypass underlying model access controls

Summary An authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected...

Open WebUI: Model meta.knowledge read-only file access can be upgraded to file write/delete

Summary Current main and v0.9.6 still allow an authenticated user to turn read-only access to another user's file into write/delete access by attaching that file ID to an attacker-controlled workspace model. This is an incomplete-fix variant of GHSA-vjqm-6gcc-62cr. The current fix adds...

Open WebUI: Terminal proxy forwards a spoofable, integrity-unbound user identity to the upstream (X-User-Id header and ws_terminal session_id query injection)

Summary The terminal proxy in backend/openwebui/routers/terminals.py forwards the Open WebUI user's identity to the upstream terminal server / backend coordinator as an authorization claim, with no cryptographic binding to the session that produced it. The forwarded identity is...

Open WebUI: `WEB_FETCH_FILTER_LIST` host allow/block filter bypassable via URL path and non-label-boundary matching

Summary The administrator-configured WEBFETCHFILTERLIST the allow/block list applied to server-side web fetches: RAG URL ingestion, URL-to-markdown, web-search content fetch matches hostnames incorrectly, so the filter can be bypassed. Details isstringallowed backend/openwebui/utils/misc.py match...

webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules

Summary An attacker can cause excessive memory allocation in webtransport-go by sending an unknown WebTransport capsule with a large payload. The implementation skips unknown capsules by reading the entire capsule body into memory, instead of draining it without retaining the data. This can lead ...

Cloudreve OAuth Admin.Read scope can update OneDrive storage policy credentials

Summary Cloudreve 4.16.1 has an OAuth scope authorization bypass in the admin storage policy routes. An OAuth bearer token scoped to Admin.Read but not Admin.Write can call POST /api/v4/admin/policy/oauth/signin and update OneDrive storage policy credentials. The route is inside the admin group...

Cloudreve: Broken Access Control in file event stream: a single-file share recipient is subscribed to the owner's parent folder and receives activity events for unshared siblings

Summary When an authenticated recipient of a single-file share opens the file event stream GET /api/v4/file/events?uri=, Cloudreve validates the URI by listing it and then subscribes the caller to parent.ID. For a single-file share, the share navigator resolves the bare share-root URI to the...

Cloudreve: Denial of Service - Image decompression / pixel bomb in thumbnail & avatar decoding crashes the server

Summary Cloudreve's built-in image processor decodes user-supplied images with Go's standard-library decoders image/png, image/jpeg, image/gif and guards only the compressed file size — never the decoded pixel dimensions. Go's decoders allocate a pixel buffer sized bytesPerPixel × width × height...

Cloudreve: Information Exposure in `GET /api/v4/user/search`: `SearchActive` omits the active-status predicate, leaking inactive/banned account emails

Summary GET /api/v4/user/search is available to any logged-in user. The service calls userClient.SearchActive, but despite its name that method filters only by email/nickname keyword and never adds a StatusActive predicate — while the sibling lookups GetActiveByID and GetActiveByDavAccount, defin...

Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account

Summary Cloudreve's WOPI PUTRELATIVE handler treats X-WOPI-SuggestedTarget as a path, not a filename. It splits the header on / and joins the segments onto the source file's directory with URI.JoinRaw, which feeds Go's url.JoinPath. url.JoinPath resolves ./.. segments, so a slash-bearing target...

yt-dlp: Downstream command injection via improper sanitization of yt-dlp --write-link output

Summary If the --write-link, --write-url-link or --write-desktop-link options are used with yt-dlp, it may produce output that can lead to downstream remote code execution. An attacker can craft a malicious metadata payload to achieve arbitrary command injection in the .url and .desktop shortcut...

Open WebUI: /api/v1/channels/{id}/members exposes full user model including sensitive credentials

Summary The channel members endpoint serializes and returns full user models for channel participants, including settings objects. A normal user in a DM can retrieve admin-only sensitive configuration such as webhook URLs and tool server key material settings.ui.toolServers.key, which is not...

Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding

Summary A normal authenticated user can read the content of a message in a private channel they do not belong to. GET /api/v1/channels/id/messages/messageid/thread authorizes the caller against the URL channel, but the underlying thread lookup loads the thread parent by id and returns it without...

Open WebUI: Cross-user model-list exposure via static cache key in get_all_models (aiocache key= vs key_builder= misuse)

Summary The getallmodels handlers in routers/openai.py and routers/ollama.py intended to cache their permission-filtered model lists per user, but the @cached decorator was misconfigured: it passed a key= lambda instead of keybuilder=. In aiocache 0.12.3 the pinned version, key= is a static cache...

Open WebUI: Upload `metadata.knowledge_id` bypasses the knowledge-base write-access check (read-only users can add files to KB)

Open WebUI upload metadata can add files to knowledge bases without write permission Summary Open WebUI's file upload background processing trusts the client-supplied metadata.knowledgeid value and inserts a knowledgefile association before validating that the uploading user has write access to t...

Open WebUI: Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id

Summary An authenticated low-privilege user can execute arbitrary code-interpreter Python and tools inside another user's authenticated session. The Socket.IO event-caller geteventcall delivers execute:python / execute:tool events to a client-supplied sessionid after only checking that the sessio...

Open WebUI: Cross-channel message overwrite via chat completion API (single-model and multimodel message_ids)

Summary Any authenticated user can overwrite the content of a message in a channel they do not belong to including private and DM channels by sending a chat completion request with a channel:-prefixed chatid and a target messageid. The channel: path routes pipeline output through...

Open WebUI: Realtime endpoints accept Redis-revoked JWTs after signout/backchannel logout

Summary With Redis configured, Open WebUI supports JWT revocation: POST /api/v1/auths/signout per-token jti and OIDC back-channel logout per-user revokedat record revocations in Redis, and HTTP auth getcurrentuser rejects revoked tokens with 401. The realtime authentication surfaces do not perfor...

Open WebUI: Unauthenticated WebSocket Access to Collaborative Document Handlers (ydoc:awareness:update, ydoc:document:leave)

Summary The Socket.IO server is configured with alwaysconnect=True lines 78, 91 in backend/openwebui/socket/main.py and the connect handler line 329 never rejects unauthenticated connections. Two Ydoc event handlers have zero authentication checks, allowing unauthenticated clients to interact wit...

Open WebUI: POST /api/v1/images/edit bypasses the global image-edit switch and the per-user image-generation permission

Summary POST /api/v1/images/edit performed no authorization beyond requiring a verified account. Every other image-editing surface in Open WebUI enforces the global image-edit switch and the per-user image-generation permission — the /api/v1/images/generations route, the built-in editimage tool,...

Open WebUI: ReDoS in skill-mention regexes causes whole-instance DoS on default config

Summary Two regexes in backend/openwebui/utils/middleware.py that parse skill-mention tags backtrack in On² on input that contains . Both run synchronously, on the asyncio event loop, on every chat completion with no feature gate. Because the default deployment is a single uvicorn worker, one suc...

Open WebUI: Scheduled automations continue after pending-user deactivation and stored model ACL revocation

Title: Scheduled automations continue after pending-user deactivation and stored model ACL revocation Summary Open WebUI documents pending as a zero-access role used for new sign-ups and deactivated users, and normal HTTP routes enforce that with getverifieduser which rejects pending, while...

Open WebUI: Account enumeration via observable login timing discrepancy

Summary The /api/v1/auths/signin endpoint leaked whether an email address belonged to a registered account through a response-time side channel. Password verification ran bcrypt only when the email was found in the database; for a non-existent email the request returned early without hashing. The...

Open WebUI: Stored web worker XSS via Pyodide

Title: Same-origin Pyodide code execution allows server-side RCE via a shared chat Summary Open WebUI runs client-side Python Pyodide in a same-origin web worker. Through Pyodide's JavaScript API pyodide.http.pyfetch, or the js module which exposes the page's fetch / XMLHttpRequest executed Pytho...

Claude Code: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution

Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite file...

Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion

Summary An attacker can cause Denial of Service by sending a specially crafted malicious XML payload e.g., repeated . Because the parser state is not saved between decode invocations, an attacker can trickle-feed a payload of / characters. This forces the decoder to repeatedly rescan the entire...

Netty: Memory Leak in DNS Record Decoder via Malformed Domain Names

Summary A memory leak can be caused in Netty's DNS codec by sending malicious DNS packets containing invalid domain names. Because the leak occurs incrementally per packet, sustained malicious requests will cause a gradual Denial of Service. Details Inside...

kin-openapi: ValidationHandler.Load() Fail-Open Authentication Bypass via NoopAuthenticationFunc Default

Summary ValidationHandler.Load in getkin/kin-openapi silently replaces a nil AuthenticationFunc with NoopAuthenticationFunc, which always returns nil without performing any credential check. Because this substitution happens unconditionally when the caller omits the field, every OpenAPI security...

cel-go: JSON Private Fields Exposed via NativeTypes and ParseStructTag

The function ext.NativeTypesParseStructTag"json" does not honour the encoding/json skip directive json:"-". Fields tagged json:"-" are registered in the CEL type system under the literal name "-" and are readable from any user-submitted CEL expression via dynobj"-". Additionally, newNativeTypes...

js-yaml: Exponential parsing time in flow collections leads to denial of service

Summary Parsing a small YAML document can take exponential time. An application that calls load or loadAll on untrusted input can be hung by a payload under 200 bytes. Details When an entry in a flow sequence turns out to be a key: value pair, the parser rewinds and parses that entry a second tim...

Russh: client wrong-length X25519 `clone_from_slice` panic (pre-auth DoS)

Summary A malicious SSH server can crash a russh client session with a single malformed key-exchange reply, causing a pre-authentication Denial-of-Service before the server host key is verified. The embedding process itself stays up, but the connection is killed deterministically. Details Every...

Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records

Summary A post-authentication denial-of-service panic in russh 0.62.2 commit c4be19f1915c8682f4615c3fd50008512b474491, current default branch main as of 2026-07-22. An authenticated client sends a pty-req channel request carrying more than 130 terminal-mode records. The parser uses a fixed...

Russh: Pre-auth remote panic via all-zero Curve25519 peer public value (encode_mpint OOB)

A pre-authentication denial-of-service panic in russh 0.62.2 commit c4be19f1915c8682f4615c3fd50008512b474491, current default branch main as of 2026-07-22. An unauthenticated client sends a single SSHMSGKEXECDHINIT whose QC is 32 zero bytes. russh's Curve25519 KEX does not reject the all-zero pee...