How severe is CVE-2026-3395?

CVE-2026-3395 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-3395 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3395?

CVE-2026-3395 affects Max-3000 Maxsite Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3395?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-3395 have an EU (EUVD) identifier?

Yes. CVE-2026-3395 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9130.

When was CVE-2026-3395 published?

CVE-2026-3395 was published on 2026-03-01 and last updated on 2026-06-17.

CVE-2026-3395

CVE-2026-3395 is a high-severity vulnerability in Max-3000 Maxsite Cms with a CVSS 3.x base score of 7.3. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9130
Weakness: CWE-94
Affected product: Max-3000 Maxsite Cms
Published: 2026-03-01
Last modified: 2026-06-17

Description

A flaw has been found in MaxSite CMS up to 109.1. This impacts the function eval of the file application/maxsite/admin/plugins/editor_markitup/preview-ajax.php of the component MarkItUp Preview AJAX Endpoint. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 109.2 will fix this issue. This patch is called 08937a3c5d672a242d68f53e9fccf8a748820ef3. You should upgrade the affected component. The code maintainer was informed beforehand about the issues. He reacted very fast and highly professional.

Frequently asked questions

What is CVE-2026-3395?: A flaw has been found in MaxSite CMS up to 109.1. This impacts the function eval of the file application/maxsite/admin/plugins/editor_markitup/preview-ajax.php of the component MarkItUp Preview AJAX Endpoint. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 109.2 will fix this issue. This patch is called 08937a3c5d672a242d68f53e9fccf8a748820ef3. You should upgrade the affected component. The code maintainer was informed beforehand about the issues. He reacted very fast and highly professional.
How severe is CVE-2026-3395?: CVE-2026-3395 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-3395 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3395?: CVE-2026-3395 affects Max-3000 Maxsite Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3395?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3395 have an EU (EUVD) identifier?: Yes. CVE-2026-3395 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9130.
When was CVE-2026-3395 published?: CVE-2026-3395 was published on 2026-03-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:max-3000:maxsite_cms:*:*:*:*:*:*:*:*

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