Vulnerability · Published Mar 3, 2026 · Assigned by GitHub_M

CVE-2026-27012Unauthenticated privilege escalation in OpenSTAManager via modules/utenti/actions.php

Critical 9.8

In plain English

A critical-severity missing authentication in openstamanager from devcode-it. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.6%top 51.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	devcode-it/openstamanager	no fix listed	GHSA-247v-7cw6-q57v

Affected products (as reported)

Vendor	Product	Versions
devcode-it	openstamanager	<= 2.9.8

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/devcode-it/openstamanager/security/advisories/GHSA-247v-7cw6-q57v x_refsource_CONFIRM