baserCMS: Multiple vulnerabilities in baserCMS

published 2026-03-31 7 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-17269 , GHSA-677c-xv24-crgx

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has DOM-based cross-site scripting in tag creation. This issue has been patched in version 5.2.3.

Patch / fix

fixed in 2 links 1

packagist baserproject/basercms 5.2.3
basercms basercms 5.2.3

github.com/baserproject/basercms/releases/tag/5.2.3 release

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-31)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
GitHub	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	baserproject/basercms	<5.2.3	5.2.3

Affected products

baserproject basercms

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /baserproject/basercms/security/advisories/GHSA-677c-xv24-crgx
web, vendor-advisory
basercms.net /security/JVN_20837860
web, vendor-advisory
github.com /baserproject/basercms/releases/tag/5.2.3
web, release-notes
nvd.nist.gov /vuln/detail/CVE-2026-32734
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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary