LibreChat/api/server/middleware
Brad Russell ecd6d76bc8
🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319)
* fix: Add removePorts keyGenerator to all IP-based rate limiters

Six IP-based rate limiters are missing the `keyGenerator: removePorts`
option that is already used by the auth-related limiters (login,
register, resetPassword, verifyEmail). Without it, reverse proxies that
include ports in X-Forwarded-For headers cause
ERR_ERL_INVALID_IP_ADDRESS errors from express-rate-limit.

Fixes #12318

* fix: make removePorts IPv6-safe to prevent rate-limit key collisions

The original regex `/:\d+[^:]*$/` treated the last colon-delimited
segment of bare IPv6 addresses as a port, mangling valid IPs
(e.g. `::1` → `::`, `2001:db8::1` → `2001:db8::`). Distinct IPv6
clients could collapse into the same rate-limit bucket.

Use `net.isIP()` as a fast path for already-valid IPs, then match
bracketed IPv6+port and IPv4+port explicitly. Bare IPv6 addresses
are now returned unchanged.

Also fixes pre-existing property ordering inconsistency in
ttsLimiters.js userLimiterOptions (keyGenerator before store).

* refactor: move removePorts to packages/api as TypeScript, fix import order

- Move removePorts implementation to packages/api/src/utils/removePorts.ts
  with proper Express Request typing
- Reduce api/server/utils/removePorts.js to a thin re-export from
  @librechat/api for backward compatibility
- Consolidate removePorts import with limiterCache from @librechat/api
  in all 6 limiter files, fixing import order (package imports shortest
  to longest, local imports longest to shortest)
- Remove narrating inline comments per code style guidelines

---------

Co-authored-by: Danny Avila <danny@librechat.ai>
2026-03-19 21:48:03 -04:00
..
accessResources 🛡️ fix: Enforce MULTI_CONVO and agent ACL checks on addedConvo (#12243) 2026-03-15 17:12:45 -04:00
assistants 🛜 refactor: Streamline App Config Usage (#9234) 2025-08-26 12:10:18 -04:00
config 🛜 refactor: Streamline App Config Usage (#9234) 2025-08-26 12:10:18 -04:00
limiters 🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319) 2026-03-19 21:48:03 -04:00
roles 🔧 refactor: Permission handling for Resource Sharing (#11283) 2026-01-10 14:02:56 -05:00
spec 🧭 fix: Add Base Path Support for Login/Register and Image Paths (#10116) 2025-11-21 11:25:14 -05:00
validate ✍️ fix: Validation for Conversation Title Updates (#11099) 2025-12-25 12:59:48 -05:00
abortMiddleware.js 🧮 refactor: Bulk Transactions & Balance Updates for Token Spending (#11996) 2026-03-01 12:26:36 -05:00
abortMiddleware.spec.js 🧮 refactor: Bulk Transactions & Balance Updates for Token Spending (#11996) 2026-03-01 12:26:36 -05:00
abortRun.js 📦 chore: Bump Express.js to v5 (#10671) 2025-12-11 16:36:15 -05:00
buildEndpointOption.js 🎭 feat: Override Custom Endpoint Schema with Specified Params Endpoint (#11788) 2026-02-13 23:04:51 -05:00
buildEndpointOption.spec.js 🎭 feat: Override Custom Endpoint Schema with Specified Params Endpoint (#11788) 2026-02-13 23:04:51 -05:00
canDeleteAccount.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
checkBan.js 🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319) 2026-03-19 21:48:03 -04:00
checkDomainAllowed.js 📧 fix: Case-Insensitive Domain Matching (#9868) 2025-09-27 21:20:19 -04:00
checkInviteUser.js 🏗️ refactor: Extract DB layers to data-schemas for shared use (#7650) 2025-05-30 22:18:13 -04:00
checkPeoplePickerAccess.js 🛂 fix: Validate types Query Param in People Picker Access Middleware (#12276) 2026-03-17 02:46:11 -04:00
checkPeoplePickerAccess.spec.js 🛂 fix: Validate types Query Param in People Picker Access Middleware (#12276) 2026-03-17 02:46:11 -04:00
checkSharePublicAccess.js 🛸 feat: Remote Agent Access with External API Support (#11503) 2026-01-28 17:44:33 -05:00
checkSharePublicAccess.spec.js 🔧 refactor: Permission handling for Resource Sharing (#11283) 2026-01-10 14:02:56 -05:00
denyRequest.js 🕐 feat: Configurable Retention Period for Temporary Chats (#8056) 2025-06-25 17:16:26 -04:00
error.js 📦 refactor: Request Message Sanitization for Smaller Final Response (#10792) 2025-12-03 14:26:49 -05:00
index.js 🚦 refactor: Concurrent Request Limiter for Resumable Streams (#11167) 2026-01-01 11:10:56 -05:00
logHeaders.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
moderateText.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
noIndex.js 🚫🔍 feat: disallow search indexing (#1409) 2023-12-29 20:42:04 -05:00
optionalJwtAuth.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
requireJwtAuth.js 🛡️ fix: Secure MCP/Actions OAuth Flows, Resolve Race Condition & Tool Cache Cleanup (#11756) 2026-02-12 14:22:05 -05:00
requireLdapAuth.js 🚀 feat(LDAP): Add Flexible Configuration Options (#3124) 2024-06-21 10:14:53 -04:00
requireLocalAuth.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
setHeaders.js feat(GPT/Anthropic): Continue Regenerating & Generation Buttons (#808) 2023-08-17 12:50:05 -04:00
uaParser.js 🏦 refactor: Centralize Caching & Redis Key Prefixing (#8457) 2025-07-15 18:24:31 -04:00
validateImageRequest.js 🍪 refactor: Move OpenID Tokens from Cookies to Server-Side Sessions (#11236) 2026-01-06 15:22:10 -05:00
validateMessageReq.js 🚤 refactor: Optimize Request Lifecycle Speeds (#3222) 2024-06-28 08:44:47 -04:00
validateModel.js 🛜 refactor: Streamline App Config Usage (#9234) 2025-08-26 12:10:18 -04:00
validatePasswordReset.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00
validateRegistration.js 🧹 chore: Cleanup Logger and Utility Imports (#9935) 2025-10-01 23:30:47 -04:00