# CVE-2025-27781: Applio allows unsafe deserialization in inference.py

> Applio allows remote code execution via unsafe deserialization when loading user-supplied model files using torch.load.

- **Severity:** High 8.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Mar 2025
- **Updated:** 19 Mar 2025

## What is CVE-2025-27781?

CVE-2025-27781 is a high-severity unsafe deserialization vulnerability in IAHispano Applio, published on 19 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in inference.py. `model_file` in inference.py as well as `model_file` in tts.py take user-supplied input (e.g. a path to a model) and pass that value to the `change_choices` and later to `get_speakers_id` function, which loads that model with `torch.load` in inference.py (line 326 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 repository.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2025-27781?

It affects 1 product.


Products: Applio Applio.

## How do I fix CVE-2025-27781?

No fix has been published for CVE-2025-27781 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27781 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-27781 exists.

## Other vulnerabilities in IAHispano Applio

- [CVE-2025-27778](https://insights.sbomify.com/CVE-2025-27778/): Applio allows unsafe deserialization in infer.py (high 8.9)
- [CVE-2025-27779](https://insights.sbomify.com/CVE-2025-27779/): Applio allows unsafe deserialization in model_blender.py (high 8.9)
- [CVE-2025-27780](https://insights.sbomify.com/CVE-2025-27780/): Applio allows unsafe deserialization in model_information.py (high 8.9)
- [CVE-2025-27774](https://insights.sbomify.com/CVE-2025-27774/): Applio allows SSRF and file write in model_download.py (high 8.8)
- [CVE-2025-27775](https://insights.sbomify.com/CVE-2025-27775/): Applio allows SSRF and file write in model_download.py (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27781 and fix it if it is affected.

What it is: CVE-2025-27781 is a high-severity unsafe deserialization vulnerability in IAHispano Applio, published on 19 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-27781 exists.

Affected product: IAHispano Applio. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-27781/ (Markdown: https://insights.sbomify.com/CVE-2025-27781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27781
- OSV: https://osv.dev/vulnerability/CVE-2025-27781

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27781/
Summaries are generated and may contain mistakes; the official description above is the record.