VulnerabilityAwaiting Analysis

CVE-2026-31271

megagao production_ssm v1.0 contains an authorization bypass vulnerability in the user addition functionality.

CRITICAL 9.8EPSS 0.55%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.55% probability · 45th percentile
CISA KEV: Not listed
Weakness: CWE-288
Source: cve@mitre.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.