CVE-2026-31271 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-288

References

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

FAQ

What is CVE-2026-31271?

CVE-2026-31271 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 unauthen...

How severe is CVE-2026-31271?

CVE-2026-31271 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-31271?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.