What’s Vulnerable › Vulnerabilities

CVE-2026-43624: F5-TTS 1.1.20 Path Traversal via finetune_gradio.py create_data_project()

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-01 · updated 2026-07-22
• Weakness: CWE-22

Description

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.

Affected products

• SWivid F5-TTS: through 1.1.20

References

• https://github.com/SWivid/F5-TTS/commit/2f53ded68e5f69e248ceb200a51ef4d1dc647936
• https://github.com/SWivid/F5-TTS/issues/1293
• https://github.com/SWivid/F5-TTS/pull/1294
• https://www.vulncheck.com/advisories/f5-tts-path-traversal-via-finetune-gradio-py-create-data-project

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