Subrion CMS Cross-site Scripting

published 2018-08-02 8 y ago modified 2026-06-17 4 mo ago also GHSA-vhqr-3gr2-7px9 , EUVD-2022-5361

cvss: 6.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.7%; EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits: 1; Exploit-DB

uploads/.htaccess in Subrion CMS 4.2.1 allows XSS because it does not block .html file uploads (but does block, for example, .htm file uploads).

Patch / fix

fixed in 1 links 2

packagist intelliants/subrion 4.2.2

github.com/intelliants/subrion@cb10ac2 commit
github.com/intelliants/subrion@b12e287 commit

Timeline

2018-08-02 Published
2018-08-06 First public exploit (EDB-45150)

Exploit prediction

3.67% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

EDB-45150 Subrion CMS 4.2.1 - Cross-Site Scripting webapps, 2018-08-06

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.1	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.0	6.1	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	intelliants/subrion	<4.2.2	4.2.2

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /intelliants/subrion/commit/cb10ac2294cb2c3a6d2159f9a2bb8c58a2a10a47
web, patch, third-party-advisory
github.com /intelliants/subrion/commit/b12e287d3814c0f2d0b1892f95fc0190972d2ba5
web
exploit-db.com /exploits/45150/
exploit, third-party-advisory, vdb-entry
github.com /intelliants/subrion/issues/773
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-14840
advisory
exploit-db.com /exploits/45150
web

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.

Summary