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

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-34981
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-06 17:17:11 UTC
Updated2026-04-06 17:17:11 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
3.1CNADECLARED5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Pavelzbornik WhisperX-FastAPI affected >= 0.3.1, < 0.6.0 Not specified

References

ReferenceSourceLinkTags
github.com/pavelzbornik/whisperX-FastAPI/commit/ef78fe2001deede5354031e4... [email protected] github.com
github.com/pavelzbornik/whisperX-FastAPI/security/advisories/GHSA-6rc7-r... [email protected] github.com
github.com/pavelzbornik/whisperX-FastAPI/issues/256 [email protected] github.com
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