What’s Vulnerable › Vulnerabilities

CVE-2024-39688: fishaudio/Bert-VITS2 Limited File Write in webui_preprocess.py generate_config function

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-07-22 · updated 2026-06-17
• Weakness: CWE-22

Description

Bert-VITS2 is the VITS2 Backbone with multilingual bert. User input supplied to the data_dir variable is concatenated with other folders and used to open a new file in the generate_config function, which leads to a limited file write. The issue allows for writing /config/config.json file in arbitrary directory on the server. If a given directory path doesn’t exist, the application will return an error, so this vulnerability could also be used to gain information about existing directories on the server. This affects fishaudio/Bert-VITS2 2.3 and earlier.

Affected products

• FishAudio Bert-VITS2: through 2.3

References

• https://github.com/fishaudio/Bert-VITS2/blob/76653b5b6d657143721df2ed6c5c246b4b1d9277/webui_preprocess.py#L130-L133
• https://github.com/fishaudio/Bert-VITS2/blob/76653b5b6d657143721df2ed6c5c246b4b1d9277/webui_preprocess.py#L34
• https://securitylab.github.com/advisories/GHSL-2024-045_GHSL-2024-047_fishaudio_Bert-VITS2/
• https://github.com/fishaudio/Bert-VITS2/blob/76653b5b6d657143721df2ed6c5c246b4b1d9277/webui_preprocess.py#L130-L133
• https://github.com/fishaudio/Bert-VITS2/blob/76653b5b6d657143721df2ed6c5c246b4b1d9277/webui_preprocess.py#L34
• https://securitylab.github.com/advisories/GHSL-2024-045_GHSL-2024-047_fishaudio_Bert-VITS2/

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