What’s Vulnerable › Vulnerabilities

CVE-2025-27779: Applio allows unsafe deserialization in model_blender.py

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-19 · updated 2026-06-17
• Weakness: CWE-502

Description

Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in `model_blender.py` lines 20 and 21. `model_fusion_a` and `model_fusion_b` from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the `run_model_blender_script` and later to `model_blender` function, which loads these two models with `torch.load` in `model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the `main` branch of the Applio repository.

Affected products

• IAHispano Applio: through 3.2.8-bugfix

References

• https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/rvc/train/process/model_blender.py#L20-L21
• https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/tabs/voice_blender/voice_blender.py#L39-L56
• https://github.com/IAHispano/Applio/commit/11d139508d615a6db4d48b76634a443c66170dda
• https://securitylab.github.com/advisories/GHSL-2024-341_GHSL-2024-353_Applio/

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