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Description

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.

PUBLISHED Reserved 2026-06-15 | Published 2026-07-13 | Updated 2026-07-13 | Assigner INCIBE




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

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

Product status

Default status
unaffected

10.0.712
affected

Credits

Miguel Segovia Gil finder

References

www.incibe.es/...so/remote-code-execution-mura-softwares-cms

cve.org (CVE-2026-12257)

nvd.nist.gov (CVE-2026-12257)

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