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Vulnerability record · CVE-2026-30878 · published 31 March 2026

CVE-2026-30878: Basercms improper authorization vulnerability

Basercms · Basercms

baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unauthenticated users to submit mail form entries even when the corresponding form is not accepting submissions. This bypasses administrative controls intended to stop form intake and enables spam or abuse via the API. This issue has been patched in version 5.2.3.

5.3 CVSS 3.1 Medium EPSS 0.45% · top 63.3% CWE-285 · Improper authorization
5.3CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unauthenticated users to submit mail form entries even when the corresponding form is not accepting submissions. This bypasses administrative controls intended to stop form intake and enables spam or abuse via the API. This issue has been patched in version 5.2.3.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://basercms.net/security/JVN_20837860 Vendor Advisory
https://github.com/baserproject/basercms/releases/tag/5.2.3 Release Notes
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c ExploitVendor Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-30878), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.