CVE-2026-31271CRITICAL 9.8EPSS p41.8%

CVE-2026-31271CVE-2026-31271

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.55% probability of exploitation · percentile 41.8% · 2026-06-19T12:03:05Z
Published2026-04-07
Last modified2026-04-09

Underlying weaknesses· 1

CWE-288

References

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

1

TypeTargetConfidenceTier
WeaknessAuthentication Bypass Using an Alternate Path or Channelcwe-2880%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.