Subrion CMS Cross-Site Request Forgery (CSRF) vulnerability

published 2020-05-15 6 y ago modified 2026-06-17 4 mo ago also GHSA-c4wx-3x5q-hf4w , EUVD-2022-3510

cvss: 8.1; 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

A Cross-Site Request Forgery (CSRF) vulnerability was discovered in Subrion CMS 4.2.1 that allows a remote attacker to remove files on the server without a victim's knowledge, by enticing an authenticated user to visit an attacker's web page. The application fails to validate the CSRF token for a GET request. An attacker can craft a panel/uploads/read.json?cmd=rm URL (removing this token) and send it to the victim.

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/157700/Subrion-CMS-4.2.1-Cross-Site-Request-Forgery.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
NVD	2.0	5.8	AV:N/AC:M/Au:N/C:N/I:P/A:P
GitHub	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	intelliants/subrion	1 listed version	no fix listed

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

packetstormsecurity.com /files/157700/Subrion-CMS-4.2.1-Cross-Site-Request-Forgery.html
web, exploit, third-party-advisory, vdb-entry
nvd.nist.gov /vuln/detail/CVE-2019-20390
advisory
github.com /intelliants/subrion
package

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