CVE-2026-27012
Received Received - Intake
Privilege Escalation in OpenSTAManager via Authentication Bypass

Publication date: 2026-03-03

Last updated on: 2026-03-05

Assigner: GitHub, Inc.

Description
OpenSTAManager is an open source management software for technical assistance and invoicing. In 2.9.8 and earlier, a privilege escalation and authentication bypass vulnerability in OpenSTAManager allows any attacker to arbitrarily change a user's group (idgruppo) by directly calling modules/utenti/actions.php. This can promote an existing account (e.g. agent) into the Amministratori group as well as demote any user including existing administrators.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-03-03
Last Modified
2026-03-05
Generated
2026-06-16
AI Q&A
2026-03-04
EPSS Evaluated
2026-06-15
NVD
CVE-2026-27012
EUVD
EUVD-2026-9334
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
devcode openstamanager to 2.9.8 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in OpenSTAManager version 2.9.8 and earlier. It allows an attacker to bypass authentication and escalate privileges by directly calling a specific script (modules/utenti/actions.php) to change a user's group membership arbitrarily.

Through this, an attacker can promote a regular user account, such as an agent, to the Amministratori (administrator) group or demote any user, including existing administrators.

Impact Analysis

The vulnerability can have severe impacts because it allows attackers to gain administrative privileges without proper authorization.

  • Attackers can promote their own or other accounts to administrator level, gaining full control over the system.
  • Attackers can demote legitimate administrators, potentially locking out authorized users.
  • This can lead to complete compromise of the system's confidentiality, integrity, and availability.
Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

I don't know

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-27012. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart