Vulnerability · Published May 6, 2026 · Assigned by GitHub_M

CVE-2026-40326Masa CMS CSRF in site bundle creation allows unauthorized site data export

High 7.1

In plain English

A high-severity cross-site request forgery in MasaCMS from MasaCMS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.2%top 95.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in `csettings.cfc` 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.

Affected products (as reported)

Vendor	Product	Versions
MasaCMS	MasaCMS	< 7.2.10>= 7.3.0, < 7.3.15>= 7.4.0, < 7.4.10>= 7.5.0, < 7.5.3

Weakness: CWE-352 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-622v-h7vf-w4gm x_refsource_CONFIRM