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Vulnerabilities

Vulnerability · CVE-2026-40326

Masa CMS is a content management system forked from Mura CMS.

Published May 6, 2026 · catalog updated Jun 17, 2026 · Masa CMS is a

Check if you run it

No confirmed exploitation is on record for CVE-2026-40326. EPSS is 0.22%. Act only if a listed version of Masa CMS is a is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Masa CMS is a).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.22%
Remediation
Version ranges on file
Affected products
stated named in the record

Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visited by a logged-in administrator, triggers the silent creation of a comprehensive site bundle. This bundle is saved to a predictable, publicly accessible web directory. An unauthenticated attacker can then retrieve the bundle and obtain site content, user account data, password hashes, form submissions, email lists, plugins, and configuration data. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, remove unexpected bundle files from public directories, restrict access to the affected endpoint, and limit exposure of administrative sessions.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 7.5.2

How to fix CVE-2026-40326

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-40326. EPSS is 0.22%. Act only if a listed version of Masa CMS is a is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 7.5.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-352: Cross-Site Request Forgery (CSRF). EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 6, 2026 · NIST NVD

    Detected

    Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visited by a logged-in administrator, triggers the silent creation of a comprehensive site bundle. This bundle is saved to a predictable, pu

  2. Jun 17, 2026 · NIST NVD

    Updated

    Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visited by a logged-in administrator, triggers the silent creation of a comprehensive site bundle. This bundle is saved to a predictable, pu

Sources

  • CVE.orgVulnerability recordCVE-2026-40326

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-40326

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-40326

    Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visi

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.