CVE-2026-34981

MEDIUM

whisperX REST API: SSRF in download_from_url() — URL validation happens after HTTP request, extension bypass via .mp3

Title source: cna
STIX 2.1

Description

The whisperX API is a tool for enhancing and analyzing audio content. From 0.3.1 to 0.5.0, FileService.download_from_url() in app/services/file_service.py calls requests.get(url) with zero URL validation. The file extension check occurs AFTER the HTTP request is already made, and can be bypassed by appending .mp3 to any internal URL. The /speech-to-text-url endpoint is unauthenticated. This vulnerability is fixed in 0.6.0.

References (3)

Core 3

Scores

CVSS v3 5.8
EPSS 0.0025
EPSS Percentile 16.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
pavelzbornik/whisperX-FastAPI >= 0.3.1, < 0.6.0
pavelzbornik/whisperx_rest_api 0.3.1 - 0.6.0
Published Apr 06, 2026
Tracked Since Apr 06, 2026