Session Fixation in Subrion CMS

published 2020-04-29 6y ago modified 2026-06-17 4mo ago also GHSA-qpxw-6473-ppww , EUVD-2021-1384

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits: 0; none known

Subrion CMS 4.2.1 allows session fixation via an alphanumeric value in a session cookie.

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Exploit prediction

0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/belong2yourself/vulnerabilities/tree/master/Subrion%20CMS/Session%20Fixation 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:N/S:U/C:L/I:L/A:N
NVD	2.0	6.4	AV:N/AC:L/Au:N/C:P/I:P/A:N
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	intelliants/subrion	<=4.2.1	no fix listed

Classification

Weakness

CWE-384 Session Fixation

References

github.com /belong2yourself/vulnerabilities/tree/master/Subrion%20CMS/Session%20Fixation
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-12467
advisory

Sources

Fencer Intel 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.