CVE-2026-31271

CVSS 9.8 CRITICALEPSS 0.6%CWE-288

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

07 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

megagao production_ssm v1.0 contains an authorization bypass vulnerability in the user addition functionality. The insert() method in UserController.java lacks authentication checks, allowing unauthenticated attackers to create super administrator accounts by directly accessing the /user/insert endpoint. This leads to complete system compromise.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

n/a · n/a

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References

https://github.com/clockw1se0v0/Vul/blob/main/production_ssm/Unauthorized.md