How severe is CVE-2026-30879?

CVE-2026-30879 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-30879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30879?

CVE-2026-30879 affects Basercms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30879?

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

Does CVE-2026-30879 have an EU (EUVD) identifier?

Yes. CVE-2026-30879 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17263.

When was CVE-2026-30879 published?

CVE-2026-30879 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-30879

CVE-2026-30879 is a medium-severity vulnerability in Basercms with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 6.9
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17263
Weakness: CWE-79
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, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.

Frequently asked questions

What is CVE-2026-30879?: baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.
How severe is CVE-2026-30879?: CVE-2026-30879 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-30879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30879?: CVE-2026-30879 affects Basercms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30879?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30879 have an EU (EUVD) identifier?: Yes. CVE-2026-30879 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17263.
When was CVE-2026-30879 published?: CVE-2026-30879 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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