devcode-it openstamanager up to 2.9.8 actions.php missing authentication

Summaryinfo

A vulnerability, which was classified as critical, has been found in devcode-it openstamanager up to 2.9.8. This vulnerability affects unknown code of the file modules/utenti/actions.php. Performing a manipulation results in missing authentication. This vulnerability is known as CVE-2026-27012. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in devcode-it openstamanager up to 2.9.8. This affects an unknown functionality of the file modules/utenti/actions.php. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE 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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-27012 since 02/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/04/2026).

By approaching the search of inurl:modules/utenti/actions.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• devcode-it

Name

• openstamanager

Version

• 2.9.0
• 2.9.1
• 2.9.2
• 2.9.3
• 2.9.4
• 2.9.5
• 2.9.6
• 2.9.7
• 2.9.8

Website

• Product: https://github.com/devcode-it/openstamanager/

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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