Path Traversal in Swivid F5-Tts
CVE-2026-43624
F5-TTS through version 1.1.20 contains a path traversal vulnerability in the finetune Gradio handlers that allows unauthenticated attackers to write arbitrary files by passing unsanitized user-supplied project names directly to os.path.join() without validating the resulting path stays within the intended base directory. Attackers can supply absolute path arguments such as /tmp/EVIL to override the base directory entirely and create arbitrary directories with attacker-controlled JSON content at any filesystem path writable by the server process.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.006 (45.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Swivid F5-Tts — versions 0, 2f53ded68e5f69e248ceb200a51ef4d1dc647936
Weakness classification (CWE)
References
- github.com/SWivid/F5-TTS/issues/1293 (issue-tracking, technical-description, exploit)
- github.com/SWivid/F5-TTS/pull/1294 (issue-tracking)
- github.com/SWivid/F5-TTS/commit/2f53ded68e5f69e248ceb200a51ef4d1dc647936 (patch)
- www.vulncheck.com/advisories/f5-tts-path-traversal-via-finetune-gradio-py-creat… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-43624?
- CVE-2026-43624 is a high-severity vulnerability in Swivid F5-Tts, classified under Path Traversal. CVSS score: 8.2/10. Published 2026-06-01.
- How severe is CVE-2026-43624?
- High severity. CVSS v3 base score is 8.2 out of 10.