CVE-2026-30878

Name: CVE-2026-30878
Creator: NVD / NIST
Published: 2026-03-31T01:16:35.977+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-30878 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-285

Affected Software

Vendor	Product	Versions
Basercms	Basercms	< 5.2.3

References

https://basercms.net/security/JVN_20837860Vendor Advisory
https://github.com/baserproject/basercms/releases/tag/5.2.3Release Notes
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3cExploit, Vendor Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3cExploit, Vendor Advisory

Timeline

Published: Mar 31, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-30878?

How severe is CVE-2026-30878?

CVE-2026-30878 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-30878?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-30878?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST