CVE-2025-32428 — Vulnerability in jupyter-remote-desktop-proxy —...
CRITICAL
TigerVNC accessible via the network and not just via a UNIX socket as intended
Published June 29, 2026Updated July 1, 2026Source: osv
Summary
## Summary
`jupyter-remote-desktop-proxy` was meant to rely on UNIX sockets readable only by the current user since version 3.0.0, but when used with TigerVNC, the VNC server started by `jupyter-remote-desktop-proxy` were still accessible via the network.
This vulnerability does not affect users having TurboVNC as the `vncserver` executable.
## Credits
This vulnerability was identified by Arne Gottwald at University of Göttingen and analyzed, reported, and reviewed by @frejanordsiek.
Advisory Timeline
- First published June 29, 2026 (105 days ago).
- Last revised July 1, 2026 — 2 days after initial publication.
Remediation
Upgrade to the fixed version using your package manager.
pip
Update jupyter-remote-desktop-proxy to 3.0.1 or laterpip install "jupyter-remote-desktop-proxy>=3.0.1"
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (1)
Affects 1 ecosystem: pypi (1).
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| jupyter-remote-desktop-proxy | pypi | 3.0.0 | 3.0.1 |
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 9.2 score means for each attack dimension.
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References
- https://github.com/jupyterhub/jupyter-remote-desktop-proxy/security/advisories/GHSA-vrq4-9hc3-cgp7WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-32428ADVISORY
- https://github.com/jupyterhub/jupyter-remote-desktop-proxy/commit/7dd54c25a4253badd8ea68895437e5a66a59090dWEB
- https://github.com/jupyterhub/jupyter-remote-desktop-proxyPACKAGE
- https://pypi.org/project/jupyter-remote-desktop-proxyPACKAGE
- https://github.com/advisories/GHSA-vrq4-9hc3-cgp7ADVISORY
Frequently Asked Questions
- What is CVE-2025-32428?
- TigerVNC accessible via the network and not just via a UNIX socket as intended This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.2/10).
- How do I check if my project is affected by CVE-2025-32428?
- CVE-2025-32428 affects jupyter-remote-desktop-proxy. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-32428 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
9.2
Exploitation is straightforward and causes maximum impact. Patch immediately.
Also Known As
PYSEC-2026-365
GHSA-vrq4-9hc3-cgp7
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