CVE-2026-12257CWE-94

Remote code execution in Mura Software’s CMS

Critical · published July 13, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
52.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
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
EPSS
0.00696 · 52.4th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-07-13T11:29Z
EPSS history
Timeline
  • 13 JUL 11:29Z
    Remote code execution in Mura Software’s CMS
    cvelistv5