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CVE-2021-31606

furlongm openvpn-monitor allows Authorization Bypass to disconnect arbitrary clients

7.5 High

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.60%Up 2.0 points since Sep 27, 2021
90%50%10%1%

What each source reports

NVD Score used7.5

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
CVE-2021-31606
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-287
Updated
2026-11-02
CVE ListNo score

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
CVE-2021-31606
Updated
2026-11-02
EUVDEUVD-2021-0163No score

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
EUVD-2021-0163
Updated
2026-11-03
GitHub AdvisoriesGHSA-5w5c-3g26-8mmc8.7

furlongm openvpn-monitor allows Authorization Bypass to disconnect arbitrary clients

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
GHSA-5w5c-3g26-8mmc
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-287
Updated
2026-11-02
OSV7.5

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
CVE-2021-31606
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVGHSA-5w5c-3g26-8mmc8.7

furlongm openvpn-monitor allows Authorization Bypass to disconnect arbitrary clients

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
GHSA-5w5c-3g26-8mmc
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-287
Updated
2026-11-02
OSVPYSEC-2021-354No score

furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.

Record
PYSEC-2021-354
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openvpn-monitor
PyPI
through 1.1.3None known
openvpn-monitor
PyPI
through 1.1.3, plus listed versions
1.0.01.1.2
None known
openvpn-monitor
PyPI
All versions, plus listed versions
1.0.01.1.21.1.32.0.22.0.32.0.4
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-31606 is a high vulnerability (CVSS 7.5) in Openvpn-monitor Project Openvpn-monitor, published September 27, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.60%, the 85th percentile. No source names a fixed version.

References

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