OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-27012: 0.60% estimated exploitation activity in the next 30 days; percentile 48.64 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary 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. Details modules/utenti/actions.php is reachable directly via http://<IP:8080/modules/utenti/actions.php and processes privileged information without requiring any authentication or authorization checks on fields like idgruppo. As a result, an attacker can submit a crafted POST request that updates the targets record and assigns it to the administrator group. The file explicitly sets: core.php then invokes: Thus, disabling any authentication and permission enforcement. As a result, this file processes operations based on the op parameter in the POST request, not only updateuser. Sensitive fields like idgruppo and others can be updated without…

Published by the source

3 Mar 2026, 17:43 UTC

Last modified by the source

3 Mar 2026, 17:43 UTC

Source last checked

26 Oct 2026, 14:38 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-247v-7cw6-q57v

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# Patch Next advisory brief: CVE-2026-27012

Advisory: OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php
IDs: CVE-2026-27012, GHSA-247v-7cw6-q57v
Record: https://patchnext.com/advisories/cve-2026-27012 (revision 1, source checked 26 Oct 2026, 14:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist devcode-it/openstamanager: affected <= 2.9.8

## Suggested inspection (read-only)
- Packagist devcode-it/openstamanager: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on devcode-it/openstamanager.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-247v-7cw6-q57v (GitHub-reviewed advisory GHSA-247v-7cw6-q57v lists affected ranges: Packagist devcode-it/openstamanager >=0 <=2.9.8)

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