CVE-2026-30878

low-risk
Published 2026-03-31

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.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Basercms

References (4)

Vendor Advisory https://basercms.net/security/JVN_20837860
Release Notes https://github.com/baserproject/basercms/releases/tag/5.2.3
Exploit https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c
Exploit https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal