CVE-2021-31606 json
furlongm openvpn-monitor allows Authorization Bypass to disconnect arbitrary clients
published 2021-09-27 5 y ago modified 2026-06-17 4 mo ago also GHSA-5w5c-3g26-8mmc , PYSEC-2021-354 , EUVD-2021-0163
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.
Patch / fix
Exploit prediction
2.60% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | openvpn-monitor | <=1.1.3 all versions |
no fix listed |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/furlongm/openvpn-monitor/commit/ddb9d31ef0ec56f578bdacf99ebe9d68455ed8ca
web, patch
-
github.com
/furlongm/openvpn-monitor/releases
web, third-party-advisory
-
packetstormsecurity.com
/files/164274/OpenVPN-Monitor-1.1.3-Authorization-Bypass-Denial-Of-Service.html
web, third-party-advisory, vdb-entry
-
nvd.nist.gov
/vuln/detail/CVE-2021-31606
advisory
-
github.com
/furlongm/openvpn-monitor
package
-
github.com
/pypa/advisory-database/tree/main/vulns/openvpn-monitor/PYSEC-2021-354.yaml
web
-
github.com
/advisories/GHSA-5w5c-3g26-8mmc
advisory
Sources
- CVE List CVE-2021-31606
- GitHub Advisory GHSA-5w5c-3g26-8mmc
- NVD CVE-2021-31606
- OSV PYSEC-2021-354
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.