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TI-2022-16761 Aliases CVE-2022-36436GHSA-237r-mx84-7x8c

OSU Open Source Lab VNCAuthProxy through 1.1.1 is affected by an vncap/vnc/protocol.py…

Priority MEDIUM 53CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

OSU Open Source Lab VNCAuthProxy through 1.1.1 is affected by an vncap/vnc/protocol.py VNCServerAuthenticator authentication-bypass vulnerability that could allow a malicious actor to gain unauthorized access to a VNC session or to disconnect a legitimate user from a VNC session. A remote attacker with network access to the proxy server could leverage this vulnerability to connect to VNC servers protected by the proxy server without providing any authentication credentials. Exploitation of this issue requires that the proxy server is currently accepting connections for the target VNC server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02072 81st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed vncauthproxy (PyPI): 1.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—vncauthproxy (PyPI)before 1.2.01.2.0Patch availableGHSA-237r-mx84-7x8c
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • vncauthproxy (PyPI) Vendor— Affected before 1.2.0 Fixed in 1.2.0 Patch available GHSA-237r-mx84-7x8c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:osuosl:twisted_vnc_authentication_proxy:*:*:*:*:*:*:*:*before 1.2.0VulnerableOsuosl
  • cpe:2.3:a:osuosl:twisted_vnc_authentication_proxy:*:*:*:*:*:*:*:* Versions before 1.2.0 Vulnerable ·Osuosl

Remediation

  • Fix · GHSA-237r-mx84-7x8c vncauthproxy (PyPI) Fixed in 1.2.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-36436
  2. 2026-10-03 Alias added: GHSA-237r-mx84-7x8c

References

Exploit 1

Patch 1

Advisory 1

Other 6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences