Budibase's central outbound-fetch guard (fetchWithBlacklist) prevents SSRF/DNS-rebinding by resolving the target hostname, checking every resolved IP against the blacklist, and pinning the connection to the validated IP. The pin is implemented as a Node http(s).Agent (makePinnedAgent). The fix for CVE-2026-54353 relies on this pin to stop DNS rebinding. The REST datasource integration (@budibase/server) calls fetchWithBlacklist but performs the actual request with undici's fetch. undici does not support the Node agent …
The uploadUrl() function in packages/server/src/utilities/fileUtils.ts uses a bare fetch(url) call without any SSRF protection. This function is invoked when the AI table generation feature processes LLM-generated attachment column values that are strings (URLs). A builder-level user can craft prompts that cause the LLM to generate internal IP addresses or cloud metadata endpoints as attachment URLs. When generateRows() calls processAttachments(), these URLs are fetched server-side without blacklist validation, allowing the attacker …
This is a related but independently fixable vulnerability to GHSA-qqf5-x7mj-v43p (PostgreSQL SQL injection), reported in the same original disclosure and split per GitHub CNA guidance (rule 4.2.11) since it affects a separate integration, has a distinct attack precondition, and requires a separate patch. The MySQL integration enables multipleStatements: true on the connection, permitting semicolon-separated multi-statement execution. During table introspection, table names retrieved from INFORMATION_SCHEMA.TABLES are interpolated into a DESCRIBE query …
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 PUBLIC_ENDPOINTS list with a TODO comment acknowledging it "should be an internal API." Any unauthenticated party can enumerate user emails or IDs to extract sensitive tenant and user metadata, enabling targeted attacks against multi-tenant deployments.
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 an absolute URL or a user-supplied {{ parameter }}), so the stored credentials are delivered to an attacker-chosen server. Because a query can be …
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 provider credentials to other users who should not have access to them.
A critical SQL injection vulnerability was discovered in Budibase's MySQL integration that allows remote attackers to execute arbitrary SQL commands.
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 on the underlying multi-tenant server. When the datasource is verified, the driver performs a real filesystem read of that path, and the error differs by file state, …
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 controller does not pin the target bucket to the datasource's configured bucket, allowing writes to any S3 bucket the stored IAM credentials can access.
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 to ANY other app in the tenant, or assign themselves/any user an arbitrary data-plane role (e.g. ADMIN) in any app, by calling POST /api/public/v1/roles/assign. The endpoint only authorizes …
Budibase's OIDC SSO login links an incoming SSO identity to an existing Budibase account by email address alone, without ever checking the email_verified 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 back to matching by the email claim and merges into the existing account by email, preserving that account's _id and roles. Because …
When an SSO-authenticated user tests an automation in the Budibase builder, their OAuth2 access token and refresh token are included in the automation test results. These results are broadcast via WebSocket to all builders connected to the same dev app and stored in an in-memory cache accessible to any builder who polls the test status endpoint. This allows any co-builder of the same app to steal the testing user's OAuth2 …
Budibase's MongoDB query execution endpoint (POST /api/v2/queries/:queryId) is vulnerable to NoSQL injection through user-supplied query parameters. The enrichContext() function interpolates parameter values into JSON query templates using Handlebars with noEscaping: true, then parses the result with JSON.parse(). An attacker can inject JSON metacharacters (", {, }) into parameter values to alter the structure of MongoDB queries, bypassing intended filters to read, modify, or delete arbitrary documents.
An end-user injection in Budibase's MongoDB datasource lets any BASIC app user bypass the builder's query-level access controls. Builders scope MongoDB reads per-user with bindings like {"email": "{{ currentUser.email }}"} so each app user only sees their own rows. Because the binding is handlebars-enriched into the query JSON with noEscaping: true and then JSON.parsed, Bob (a BASIC user) overrides the builder's filter with a MongoDB operator and reads every document …
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.
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 code is delivered to the attacker's address, and completing the workflow changes the victim's account email. The attacker then password-resets the victim's account through the controlled address and logs in — full …
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 hostname with the blacklist and then performs a separate raw fetch. A hostname that resolves to a public address during validation and to 127.0.0.1 during …
The Budibase AI chat-link handoff flow (GET/POST /api/chat-links/:instance/:token/handoff) binds an external chat identity (Slack/Discord/MS Teams/Telegram) to a Budibase user account. The confirmation endpoint is on a public route (no CSRF middleware, no auth-group gate) and the only credential it checks is a confirmationToken that is already rendered in plaintext into the HTML confirmation page the victim views. There is no binding between the confirmation token and the requester's Budibase session …
The login lockout mechanism in Budibase creates an observable response discrepancy that allows unauthenticated attackers to enumerate valid email addresses. When an existing user's account is locked after 5 failed login attempts, the server returns a distinct 403 response with X-Account-Locked: 1 and Retry-After: 900 headers plus the message "Account temporarily locked." For non-existing users, the response is always a generic 403 "Unauthorized" regardless of attempt count, because the lockout …
enrichContext at packages/server/src/sdk/workspace/queries/queries.ts:121-138 substitutes parameter values into the raw JSON body of a query, then JSON.parses the result. The validator validateQueryInputs at packages/server/src/api/controllers/query/index.ts:61-71 rejects only Handlebars markers ({{, }}) in user input and does not escape JSON metacharacters (", , }). A parameter value containing a closing quote and additional keys lifts attacker-controlled fields into the parsed filter object. For Mongo find, the parsed filter passes directly to collection.find() (packages/server/src/integrations/mongodb.ts:506-510). …
The application server exposes an unauthenticated endpoint that generates S3 PutObject presigned URLs using credentials stored in a workspace datasource. The route is protected only by the recaptcha middleware and does not require authentication, table permission, datasource permission, or builder access. A public caller who knows a workspace ID and S3 datasource ID can request a signed upload URL for attacker-controlled bucket and key values.
fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. Alice, a builder, points an OAuth2 config at http://169.254.169.254/… or http://127.0.0.1:5984/; the server connects and returns response-body fragments in the validation result.
The Budibase server route POST /api/attachments/:datasourceId/url (packages/server/src/api/routes/static.ts) is registered with only the recaptcha middleware. There is no authorized(…) middleware in the chain. The controller (packages/server/src/api/controllers/static/index.ts::getSignedUploadURL) looks the requested datasource up, instantiates an AWS S3 client with the datasource's stored accessKeyId / secretAccessKey, and returns an AWS Signature V4 pre-signed PutObjectCommand URL for the caller-supplied bucket and key. The bucket is not pinned to the datasource's configured bucket. The workspace context …
The webhook trigger endpoint in Budibase is publicly accessible and passes the full HTTP request body into automation execution parameters. A mass assignment vulnerability in externalTrigger() allows an attacker to overwrite the internal appId property by including it in the webhook POST body. When the automation is processed asynchronously (the default path for webhooks without a collect step), the worker executes the attacker-defined automation in the context of the victim's …
POST /api/pwa/process-zip at packages/server/src/api/routes/static.ts:24 accepts a builder-uploaded .zip, extracts it with extract-zip@2.0.1 into a temp directory, then for each entry listed in icons.json validates the icon path, opens it, and streams the bytes into MinIO. The resulting object is served back via GET /api/assets/{appId}/pwa/{uuid}.png. extract-zip@2.0.1 preserves absolute symlink targets when restoring symlink entries. The icon-source validator at packages/server/src/api/controllers/static/index.ts:259-268 resolves the icon source string against baseDir (path.resolve), checks resolvedSrc.startsWith(baseDir + path.sep) …
Title Chat Identity Link Hijacking — Attacker Can Silently Map Their Slack/Discord Identity to Any Authenticated Budibase User's Account Severity High — CVSS 3.1: AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N = 7.3 Affected Product Product: Budibase Version: 3.37.2 (introduced in this version) Component: packages/server/src/api/controllers/ai/chatIdentityLinks.ts Endpoint: GET /api/chat-links/:instance/:token/handoff Vulnerability Type CWE-352: Cross-Site Request Forgery CWE-284: Improper Access Control Vulnerability Description GET /api/chat-links/:instance/:token/handoff is a public endpoint (no auth required) that performs a permanent, state-changing operation: it …
/api/public/v1/roles/assign is guarded by the builderOrAdmin middleware, which passes any user who is a builder for the app id in the x-budibase-app-id header. That check admits both global builders and workspace-scoped builders (builder.apps set but builder.global unset). The controller then spreads the request body into the SDK call, and the SDK grants builder.global=true or admin.global=true on whichever user ids the caller supplies. Bob, a workspace-scoped builder with an API key, …
The webhook schema-building endpoint is registered under builderRoutes, but the generic authorization middleware skips authorization for all paths matching /api/webhooks/schema. As a result, an unauthenticated caller can update the body schema for a known webhook and mutate the corresponding automation trigger output schema.
The VectorDB configuration endpoint in Budibase accepts a host parameter that undergoes no validation against internal IP ranges, reserved hostnames, or URL schemes. Any authenticated user with builder-level access can supply an arbitrary host value such as 169.254.169.254 or localhost, causing the server to initiate outbound TCP connections to internal network addresses or cloud metadata endpoints on their behalf.
The OAuth2 token fetch function in packages/server/src/sdk/workspace/oauth2/utils.ts (line 59) uses raw fetch(config.url) with no SSRF protection. The safe wrapper fetchWithBlacklist() exists in the same codebase and is used in every other outbound HTTP call (automation steps, plugin downloads, object store), but was not applied to the OAuth2 token endpoint. A user with BUILDER role can point the OAuth2 token URL to internal services (CouchDB, cloud metadata) to exfiltrate sensitive data.
Budibase stores external REST datasource credentials server-side and documents that database credentials are applied server-side and are not exposed in the UI. The REST datasource implementation redacts stored Basic/Bearer/OAuth2 auth secrets before returning datasource data to clients. However, the single-datasource GET and PUT routes are guarded by generic TABLE READ, not by Builder/Admin permission or datasource-specific ownership/resource checks. The built-in Basic app user role maps to the WRITE permission set, …
The V1 Views API (POST /api/views) accepts a calculation parameter from the request body that is interpolated directly into a CouchDB reduce function definition without validation. Although an internal SCHEMA_MAP object defines the valid calculation types (sum, count, stats), no actual validation is performed against this map before the value is used in string interpolation. A user with Builder permissions can inject arbitrary JavaScript code that will be executed within …
An authenticated user with builder permissions can: Access cloud metadata endpoints (AWS IAM credentials, GCP service tokens, Azure IMDS) Scan internal network services and ports Access internal APIs not intended for external access Exfiltrate data from internal services via the automation response In Budibase Cloud (SaaS), this could be used to steal cloud provider credentials, potentially leading to full infrastructure compromise.
The REST datasource integration follows HTTP redirects without re-checking the IP blacklist, allowing an authenticated Builder to access internal services (cloud metadata, databases) by redirecting through an attacker-controlled server. The same vulnerability class was already patched in automation steps (fetchWithBlacklist in packages/server/src/automations/steps/utils.ts) but the REST integration was missed.
Budibase exposes a REST API for datasource management. The route PUT /api/datasources/:datasourceId is registered in the authorizedRoutes group with TABLE/READ permission. This is the same authorization level as the read endpoint (GET /api/datasources/:datasourceId). Every authenticated Budibase app user with the BASIC built-in role or higher carries TABLE/WRITE (and therefore TABLE/READ) permissions, and the datasource update controller performs no additional builder check. As a result, any authenticated non-builder app user can …
An unauthenticated attacker can achieve Remote Code Execution (RCE) on the Budibase server by triggering an automation that contains a Bash step via the public webhook endpoint. No authentication is required to trigger the exploit. The process executes as root inside the container.
The plugin file upload endpoint (POST /api/plugin/upload) passes the user-supplied filename directly to createTempFolder() without sanitizing path traversal sequences. An attacker with Global Builder privileges can craft a multipart upload with a filename containing ../ to delete arbitrary directories via rmSync and write arbitrary files via tarball extraction to any filesystem path the Node.js process can access.
Location: packages/server/src/automations/steps/bash.ts
Location: packages/server/src/integrations/postgres.ts:529-531