baserCMS vulnerable to stored Cross-site Scripting

published 2022-12-07 3 y ago modified 2026-09-10 1 mo ago also GHSA-7w2v-35j3-xrm9 , EUVD-2022-7557

cvss: 4.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits: 0; none known

Stored cross-site scripting vulnerability in User group management of baserCMS versions prior to 4.7.2 allows a remote authenticated attacker with an administrative privilege to inject an arbitrary script.

Patch / fix

fixed in 2

packagist baserproject/basercms 4.7.2
basercms basercms 4.7.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
GitHub	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	baserproject/basercms	<4.7.2	4.7.2

Affected products

baserCMS Users Community baserCMS

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

basercms.net /security/JVN_53682526
web, vendor-advisory
jvn.jp /en/jp/JVN53682526/index.html
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-42486
advisory
github.com /baserproject/basercms
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