LibreChat/api
Danny Avila 6183303653
🔉 fix: Normalize audio MIME types in STT format validation (#12674)
* fix: normalize audio MIME types in STT format validation

Use getFileExtensionFromMime() to normalize non-standard MIME types
(e.g. audio/x-m4a, audio/x-wav, audio/x-flac) before checking against
the accepted formats list in azureOpenAIProvider. This is the same class
of bug as #12608 (text/x-markdown), but for STT audio validation.

Only audio/ and video/ MIME prefixes are normalized to prevent
non-audio types from matching via the webm default fallback.

Export getFileExtensionFromMime for testability.

Fixes #12632

* fix: reject unknown audio subtypes in STT format validation

Use MIME_TO_EXTENSION_MAP for normalization instead of
getFileExtensionFromMime() which falls back to 'webm' for unrecognized
types. Gate raw subtype matching on audio/video prefix to prevent
non-audio types (e.g. text/webm) from passing validation.

Resolves Codex review comment about unknown subtypes silently passing.

---------

Co-authored-by: Tobias Jonas <t.jonas@innfactory.de>
2026-04-15 09:58:07 -04:00
..
app 📎 fix: Route Unrecognized File Types via supportedMimeTypes Config (#12508) 2026-04-01 23:04:43 -04:00
cache 🚦 fix: ERR_ERL_INVALID_IP_ADDRESS and IPv6 Key Collisions in IP Rate Limiters (#12319) 2026-03-19 21:48:03 -04:00
config 🪵 fix: Standardize Logging Directory with Environment-Aware Resolution (#11000) 2025-12-16 18:00:06 -05:00
db 🐛 fix: Resolve MeiliSearch Startup Sync Failure from Model Loading Order (#12397) 2026-03-25 14:02:44 -04:00
models 🗑️ chore: Remove Action Test Suite and Update Mock Implementations (#12268) 2026-03-21 14:28:55 -04:00
server 🔉 fix: Normalize audio MIME types in STT format validation (#12674) 2026-04-15 09:58:07 -04:00
strategies 🔐 feat: Admin Auth Support for SAML and Social OAuth Providers (#12472) 2026-03-30 22:49:44 -04:00
test 🗂️ refactor: Migrate S3 Storage to TypeScript in packages/api (#11947) 2026-03-21 14:28:55 -04:00
utils 🧹 chore: Remove Deprecated Gemini 2.0 Models & Fix Mistral-Large-3 Context Window (#12453) 2026-03-28 23:44:58 -04:00
jest.config.js 📏 refactor: Add File Size Limits to Conversation Imports (#12221) 2026-03-14 03:06:29 -04:00
jsconfig.json feat(api): initial Redis support; fix(SearchBar): proper debounce (#1039) 2023-10-11 17:05:47 -04:00
package.json 🔍 fix: Anthropic Web Search Multi-Turn Issue and Attachment Results (#12651) 2026-04-13 15:44:41 -04:00
typedefs.js 🪦 refactor: Remove Legacy Code (#10533) 2025-12-11 16:36:12 -05:00