furlongm openvpn-monitor allows CSRF to disconnect an arbitrary client

published 2021-09-27 5 y ago modified 2026-06-17 4 mo ago also GHSA-vw35-c8hf-fwmq , PYSEC-2021-352 , EUVD-2021-0161

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

furlongm openvpn-monitor through 1.1.3 allows CSRF to disconnect an arbitrary client.

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

packetstormsecurity.com http://packetstormsecurity.com/files/164281/OpenVPN-Monitor-1.1.3-Cross-Site-Request-Forgery.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P
GitHub	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
pypi	openvpn-monitor	<=1.1.3 all versions	no fix listed

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

packetstormsecurity.com /files/164281/OpenVPN-Monitor-1.1.3-Cross-Site-Request-Forgery.html
web, exploit, third-party-advisory, vdb-entry
github.com /furlongm/openvpn-monitor/releases
web, release-notes, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-31604
advisory
github.com /furlongm/openvpn-monitor
package
github.com /pypa/advisory-database/tree/main/vulns/openvpn-monitor/PYSEC-2021-352.yaml
web
github.com /advisories/GHSA-vw35-c8hf-fwmq
advisory

Sources

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.

Summary