CVE-2026-43624
High · 8.2CVSS
8.2
EPSS
0.6%
Published
Jun 1, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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