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EPSS 0.6%top 57%

CVE-2026-31271: n/a

0
Critical
VulnerabilityCVE-2026-31271cvecve-2026-31271
Published: 04/07/2026 (04/07/2026, 00:00:00 UTC)
Source: CVE Database V5

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 v3.1

Score 9.8critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

GitHub Actionsmore threats →ai
megagao/production_ssm
pkg:github/megagao/production_ssm
Affected versions
=1.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/15/2026, 12:33:33 UTC

Technical Analysis

CVE-2026-31271 is an authorization bypass vulnerability in megagao production_ssm v1.0. Specifically, the insert() method in UserController.java lacks authentication verification, enabling unauthenticated attackers to invoke the /user/insert endpoint and create super administrator accounts. This flaw corresponds to CWE-288 (Authentication Bypass by Alternate Path or Channel) and results in a critical security risk with a CVSS 3.1 base score of 9.8, indicating high impact on confidentiality, integrity, and availability.

Potential Impact

Successful exploitation allows unauthenticated attackers to create super administrator accounts, leading to full system compromise. This includes total control over the affected system, unauthorized data access, modification, and potential denial of service.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the /user/insert endpoint through network controls or application-layer protections to prevent unauthorized access.

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Technical Details

Data Version
5.2
Assigner Short Name
mitre
Date Reserved
2026-03-09T00:00:00.000Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null

Threat ID: 69d5874d43e2781bad84f52a

Added to database: 04/07/2026, 22:38:05 UTC

Last enriched: 04/15/2026, 12:33:33 UTC

Last updated: 07/31/2026, 19:22:58 UTC

Views: 105

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