How severe is CVE-2026-30878?

CVE-2026-30878 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-30878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30878?

CVE-2026-30878 affects Basercms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30878?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-30878 have an EU (EUVD) identifier?

Yes. CVE-2026-30878 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17261.

When was CVE-2026-30878 published?

CVE-2026-30878 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-30878

CVE-2026-30878 is a medium-severity vulnerability in Basercms with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17261
Weakness: CWE-285
Affected product: Basercms
Published: 2026-03-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-30878?: CVE-2026-30878 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-30878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30878?: CVE-2026-30878 affects Basercms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30878 have an EU (EUVD) identifier?: Yes. CVE-2026-30878 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17261.
When was CVE-2026-30878 published?: CVE-2026-30878 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:*

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