SSRF in Pavelzbornik Whisperx-Fastapi
CVE-2026-34981
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (16.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
Affected products
- Pavelzbornik Whisperx-fastapi — versions >= 0.3.1, < 0.6.0
- Pavelzbornik Whisperx_rest_api
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory, Mitigation)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34981?
- CVE-2026-34981 is a medium-severity vulnerability in Pavelzbornik Whisperx-Fastapi, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.8/10. Published 2026-04-06.
- How severe is CVE-2026-34981?
- Medium severity. CVSS v3 base score is 5.8 out of 10.