LibreChat/packages/api/src/endpoints
Danny Avila f7ab5e645a
🫷 fix: Validate User-Provided Base URL in Endpoint Init (#12248)
* 🛡️ fix: Block SSRF via user-provided baseURL in endpoint initialization

User-provided baseURL values (when endpoint is configured with
`user_provided`) were passed through to the OpenAI SDK without
validation. Combined with `directEndpoint`, this allowed arbitrary
server-side requests to internal/metadata URLs.

Adds `validateEndpointURL` that checks against known SSRF targets
and DNS-resolves hostnames to block private IPs. Applied in both
custom and OpenAI endpoint initialization paths.

* 🧪 test: Add validateEndpointURL SSRF tests

Covers unparseable URLs, localhost, private IPs, link-local/metadata,
internal Docker/K8s hostnames, DNS resolution to private IPs, and
legitimate public URLs.

* 🛡️ fix: Add protocol enforcement and import order fix

- Reject non-HTTP/HTTPS schemes (ftp://, file://, data:, etc.) in
  validateEndpointURL before SSRF hostname checks
- Document DNS rebinding limitation and fail-open semantics in JSDoc
- Fix import order in custom/initialize.ts per project conventions

* 🧪 test: Expand SSRF validation coverage and add initializer integration tests

Unit tests for validateEndpointURL:
- Non-HTTP/HTTPS schemes (ftp, file, data)
- IPv6 loopback, link-local, and unique-local addresses
- .local and .internal TLD hostnames
- DNS fail-open path (lookup failure allows request)

Integration tests for initializeCustom and initializeOpenAI:
- Guard fires when userProvidesURL is true
- Guard skipped when URL is system-defined or falsy
- SSRF rejection propagates and prevents getOpenAIConfig call

* 🐛 fix: Correct broken env restore in OpenAI initialize spec

process.env was captured by reference, not by value, making the
restore closure a no-op. Snapshot individual env keys before mutation
so they can be properly restored after each test.

* 🛡️ fix: Throw structured ErrorTypes for SSRF base URL validation

Replace plain-string Error throws in validateEndpointURL with
JSON-structured errors using type 'invalid_base_url' (matching new
ErrorTypes.INVALID_BASE_URL enum value). This ensures the client-side
Error component can look up a localized message instead of falling
through to the raw-text default.

Changes across workspaces:
- data-provider: add INVALID_BASE_URL to ErrorTypes enum
- packages/api: throwInvalidBaseURL helper emits structured JSON
- client: add errorMessages entry and localization key
- tests: add structured JSON format assertion

* 🧹 refactor: Use ErrorTypes enum key in Error.tsx for consistency

Replace bare string literal 'invalid_base_url' with computed property
[ErrorTypes.INVALID_BASE_URL] to match every other entry in the
errorMessages map.
2026-03-15 18:41:59 -04:00
..
anthropic 🤖 feat: Claude Sonnet 4.6 support (#11829) 2026-02-17 15:24:03 -05:00
bedrock 🧠 feat: Add reasoning_effort configuration for Bedrock models (#11991) 2026-02-28 15:02:09 -05:00
custom 🫷 fix: Validate User-Provided Base URL in Endpoint Init (#12248) 2026-03-15 18:41:59 -04:00
google 🎚️ feat: Add Thinking Level Parameter for Gemini 3+ Models (#11994) 2026-02-28 16:56:10 -05:00
openai 🫷 fix: Validate User-Provided Base URL in Endpoint Init (#12248) 2026-03-15 18:41:59 -04:00
config.ts 🌙 feat: Moonshot Provider Support (#11621) 2026-02-04 10:53:57 +01:00
index.ts 🧵 refactor: Migrate Endpoint Initialization to TypeScript (#10794) 2025-12-11 16:37:16 -05:00
models.spec.ts 🧵 refactor: Migrate Endpoint Initialization to TypeScript (#10794) 2025-12-11 16:37:16 -05:00
models.ts 🤖 feat: Anthropic Vertex AI Support (#10780) 2025-12-30 18:16:52 -05:00