CVE-2026-30878

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 v3.1

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

CVSS v3.1

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

EPSS

0.38% chance of exploitation in the next 30 days, 31th percentile

Published

2026-03-31

Proof-of-concept exploits (1)

• advisories/GHSA-8cr7-r8qw-gp3c

References

• CVE Record
• NVD entry

Related

• CVE-2026-30869
• CVE-2026-30885
• CVE-2026-30863
• CVE-2026-30886
• CVE-2026-30862
• CVE-2026-30887