---
title: "CVE-2026-27012: OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php"
url: https://erroneo.us/security/cve/CVE-2026-27012/
description: "CVE-2026-27012 (devcode-it/openstamanager (Composer (PHP))): OpenSTAManager is an open source management software for technical assistance and invoicing. In…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-03
date_modified: 2026-03-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-27012"
kev: false
cvss: 9.8
epss: 0.00685
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-27012: OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.7% , percentile 52: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 52% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes devcode-it/openstamanager (Composer (PHP)) <= 2.9.8, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- Composer (PHP) `devcode-it/openstamanager` <= 2.9.8 → fixed: none listed

## Affected products (CVE record)

- devcode-it openstamanager: <= 2.9.8

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.69% probability of exploitation activity in the next 30 days; percentile 52.

## Sources

- [GitHub Advisory GHSA-247v-7cw6-q57v](https://github.com/advisories/GHSA-247v-7cw6-q57v)
- [CVE.org record CVE-2026-27012](https://www.cve.org/CVERecord?id=CVE-2026-27012)
- [NVD entry CVE-2026-27012](https://nvd.nist.gov/vuln/detail/CVE-2026-27012)
- [github.com](https://github.com/devcode-it/openstamanager/security/advisories/GHSA-247v-7cw6-q57v)

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Source page: https://erroneo.us/security/cve/CVE-2026-27012/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt