Mail Submission API Vulnerability in baserCMS Product by baserProject
CVE-2026-30878

5.3MEDIUM

Key Information:

Vendor

Baserproject

Status
Basercms
Vendor
CVE Published:
31 March 2026

What is CVE-2026-30878?

baserCMS, a widely used website development framework, contains a vulnerability that allows unauthenticated users to submit mail form entries via a public mail submission API. This flaw exists in versions prior to 5.2.3 and permits users to bypass administrative controls that are designed to prevent form submissions. As a result, this vulnerability can lead to spam or abusive activities through the API. Version 5.2.3 addresses this issue by enhancing security measures to restrict unauthorized submissions.

Affected Version(s)

basercms < 5.2.3

References

https://github.com/baserproject/basercms/security/advisor...
x_refsource_CONFIRM
https://basercms.net/security/JVN_20837860
x_refsource_MISC
https://github.com/baserproject/basercms/releases/tag/5.2.3
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.