Medium 5.8Published Apr 6, 2026

CVE-2026-34981whisperX REST API: SSRF in download_from_url() — URL validation happens after HTTP request, extension bypass via .mp3

Updated under an hour ago (Oct 27, 2026, 1:23 PM ET)

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It affects pavelzbornik whisperX-FastAPI and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for pavelzbornik whisperX-FastAPI

Exploited in the last 30 days

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.

CVSS: 5.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

pavelzbornik whisperX-FastAPI pavelzbornik:whisperx_fastapi (from the name)	from 0.3.1, < 0.6.0	CNA record
pavelzbornik whisperx_rest_api pavelzbornik:whisperx_rest_api	from 0.3.1 before 0.6.0	NVD

References

References

https://github.com/pavelzbornik/whisperX-FastAPI/security/advisories/GHSA-6rc7-r867-c635	x-refsource-confirm, exploit, mitigation, third-party-advisory
https://github.com/pavelzbornik/whisperX-FastAPI/issues/256	x-refsource-misc, issue-tracking, patch
https://github.com/pavelzbornik/whisperX-FastAPI/commit/ef78fe2001deede5354031e4200d41c6a7e8cbfc	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.