CVE-2016-20051 Snewscms CVE debrief

Who should care

Administrators and users of Snews CMS 1.7 should be aware of this vulnerability and take steps to mitigate it. This includes verifying the affected scope, applying vendor remediation if available, and monitoring for suspicious activity. The vulnerability can be exploited by crafting malicious HTML forms, and defenders should review compensating controls for exposed systems.

Technical summary

The vulnerability exists in Snews CMS 1.7, allowing attackers to craft malicious HTML forms that submit POST requests to the changeup action, modifying admin username and password parameters. This can be done without authentication, allowing attackers to gain unauthorized access. The vulnerability has a CVSS score of 6.9, indicating a medium severity. Attackers can trick authenticated administrators into visiting a page containing a hidden form that submits POST requests to the changeup action. To mitigate this vulnerability, defenders should verify the affected scope, apply vendor remediation if available, and monitor for suspicious activity. The evidence is limited, and defenders should review compensating controls for exposed systems.

Defensive priority

Medium priority due to the CVSS score of 6.9.

Recommended defensive actions

• Inventory and verify Snews CMS installations
• Restrict access to the changeup action
• Implement additional authentication for administrators
• Monitor for suspicious activity
• Apply vendor remediation if available
• Review compensating controls for exposed systems
• Track exceptions and retest remediated assets

Evidence notes

The CVE record was published on 2026-04-04T14:16:17.370Z and last modified on 2026-07-21T07:10:00.117Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and the CVE record. The vulnerability affects Snews CMS 1.7 and has a CVSS score of 6.9. The evidence is limited, and defenders should verify the affected scope and severity.

Official resources