Description

Applio is a voice conversion tool. Versions 3.2.7 and prior are vulnerable to server-side request forgery (SSRF) and file write in `model_download.py` (line 143 in 3.2.7). The blind SSRF allows for sending requests on behalf of Applio server and can be leveraged to probe for other vulnerabilities on the server itself or on other back-end systems on the internal network, that the Applio server can reach. The file write allows for writing files on the server, which can be coupled with other vulnerabilities, for example an unsafe deserialization, to achieve remote code execution on the Applio server. As of time of publication, no known patches are available.

Classification

CVE ID: CVE-2025-27775

CVSS Base Severity: HIGH

CVSS Base Score: 8.8

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

Affected Products

Vendor: IAHispano

Product: Applio

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.22% (probability of being exploited)

EPSS Percentile: 45.3% (scored less or equal to compared to others)

EPSS Date: 2025-04-17 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-27775
https://securitylab.github.com/advisories/GHSL-2024-341_GHSL-2024-353_Applio/
https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/assets/flask/routes.py#L14
https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/rvc/lib/tools/model_download.py#L156
https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/rvc/lib/tools/model_download.py#L169-L171
https://github.com/IAHispano/Applio/blob/29b4a00e4be209f9aac51cd9ccffcc632dfb2973/tabs/download/download.py#L192-L196

Timeline