What is CVE-2026-63766?

CVE-2026-63766 is a critical-severity vulnerability in Rvc-Boss Gpt-Sovits, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-07-20.

How severe is CVE-2026-63766?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-63766 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Rvc-Boss Gpt-Sovits

CVE-2026-63766

GPT-SoVITS through 20250606v2pro contains an OS command injection vulnerability in webui.py where ASR, slice, denoise, and uvr5 functions interpolate unsanitized Gradio textbox values directly into shell commands executed with shell=True. Attackers can inject shell metacharacters through path parameters to execute arbitrary OS commands as the server process user without authentication.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.017 (76.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Rvc-boss Gpt-sovits — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

0xdak/CVE-2026-63766_exploit

References

disclosure@vulncheck.com (issue-tracking, technical-description)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63766?: CVE-2026-63766 is a critical-severity vulnerability in Rvc-Boss Gpt-Sovits, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-07-20.
How severe is CVE-2026-63766?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-63766 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.