CVE-2026-30878

baserCMS: Mail Form Acceptance Bypass via Public API

CVSS 5.3 MEDIUMEPSS 0.4%CWE-285

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

baserproject · basercms

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References

https://basercms.net/security/JVN_20837860 https://github.com/baserproject/basercms/releases/tag/5.2.3 https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c