Vulnerability · Published May 5, 2026 · Assigned by GitHub_M

CVE-2026-40331Masa CMS unauthenticated SQL injection via altTable parameter in JSON API

Critical 9.3

In plain English

A critical-severity SQL injection 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 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.3%top 75.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Masa CMS is an open source content management system. In versions 7.2.0 through 7.2.9, 7.3.0 through 7.3.14, 7.4.0 through 7.4.9, and 7.5.0 through 7.5.2, the unauthenticated JSON API accepts an altTable parameter that is stored via the setAltTable() method without validation or sanitization. This value is injected directly into a SQL FROM clause within feedGateway.cfc. An unauthenticated attacker can pass an arbitrary subquery into the altTable parameter to read sensitive data from any table in the database in a single HTTP request, including administrative credentials and password reset tokens. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, apply validation to the setAltTable function in core/mura/content/feed/feedBean.cfc to restrict input to simple alphanumeric table names, or disable the JSON API if it is not required.

Affected products (as reported)

Vendor	Product	Versions
MasaCMS	MasaCMS	<= 7.2.9>= 7.3.0, <= 7.3.14>= 7.4.0, <= 7.4.9>= 7.5.0, <= 7.5.2

Weakness: CWE-89 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-jphh-r686-6w7j x_refsource_CONFIRM