LibreChat/api/server
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
..
controllers 🪦 fix: ACL-Safe User Account Deletion for Agents, Prompts, and MCP Servers (#12314) 2026-03-19 17:46:14 -04:00
middleware 🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319) 2026-03-19 21:48:03 -04:00
routes 🪢 fix: Action Domain Encoding Collision for HTTPS URLs (#12271) 2026-03-17 01:38:51 -04:00
services 🪦 fix: ACL-Safe User Account Deletion for Agents, Prompts, and MCP Servers (#12314) 2026-03-19 17:46:14 -04:00
utils 🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319) 2026-03-19 21:48:03 -04:00
cleanup.js 🪣 fix: Prevent Memory Retention from AsyncLocalStorage Context Propagation (#11942) 2026-02-25 17:41:23 -05:00
experimental.js 🚦 fix: 404 JSON Responses for Unmatched API Routes (#11976) 2026-02-27 22:49:54 -05:00
index.js 🚦 fix: 404 JSON Responses for Unmatched API Routes (#11976) 2026-02-27 22:49:54 -05:00
index.spec.js 🚦 fix: 404 JSON Responses for Unmatched API Routes (#11976) 2026-02-27 22:49:54 -05:00
socialLogins.js 🔒 fix: Secure Cookie Localhost Bypass and OpenID Token Selection in AuthService (#11782) 2026-02-13 10:35:51 -05:00