CVE-2026-12257 PUBLISHED

Remote code execution in Mura Software’s CMS

Assigner: INCIBE
Reserved: 15.06.2026 Published: 13.07.2026 Updated: 13.07.2026

Versions of Mura CMS prior to 10.0.712 contain a critical remote code execution (RCE) vulnerability. The flaw is located in the endpoint “/index.cfm/_api/json/v1/default”, where the “method” parameter in POST requests is not properly validated or sanitised before being processed by the ColdFusion engine. As a result, a remote attacker could exploit this vulnerability to inject and execute arbitrary CFML (ColdFusion Markup Language) expressions and instantiate malicious Java objects, thereby compromising the system’s security.

Metrics

CVSS 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
CVSS Score: 9.3

Product Status

Vendor Mura Software
Product CMS
Versions Default: unaffected
  • Version 10.0.712 is affected

Solutions

No solution has been reported as yet.

Credits

  • Miguel Segovia Gil finder

References

Problem Types

  • CWE-94 Improper Control of Generation of Code ('Code Injection') CWE