How serious is CVE-2026-3395?

This vulnerability has a CVSS score of 6.9 out of 10, classified as MEDIUM severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-3395?

Yes, proof-of-concept exploit code for CVE-2026-3395 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-3395?

CVE-2026-3395 affects max-3000 maxsite cms. Check the full CVE details for specific version information.

How do I fix CVE-2026-3395?

To remediate CVE-2026-3395, check for security patches from max-3000. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-3395

Medium

|6.9

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can remotely inject malicious code into the MaxSite CMS through a flaw in the MarkItUp Preview feature, potentially compromising the entire system. This vulnerability affects versions up to 109.1, so upgrading to version 109.2 is essential to protect against this risk.

Technical 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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$1,000($500-$1K)

Vendor Response

Grade APatched in 3 days

Quick Information

Published

Mar 1, 2026

about 1 month ago

Last Modified

Mar 5, 2026

about 1 month ago

Vendor

max-3000

Product

maxsite cms