CVE-2026-27012 (GCVE-0-2026-27012)
Vulnerability from cvelistv5 – Published: 2026-03-03 21:53 – Updated: 2026-03-04 21:21
VLAI
EPSS
VEX
Title
Unauthenticated privilege escalation in OpenSTAManager via modules/utenti/actions.php
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-04 21:21 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/devcode-it/openstamanager/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| devcode-it | openstamanager |
Affected:
<= 2.9.8
|
guessed |
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FKIE_CVE-2026-27012
Vulnerability from fkie_nvd - Published: 2026-03-03 22:16 - Updated: 2026-06-17 10:26
Severity
Summary
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.
References
| URL | Tags | ||
|---|---|---|---|
| security-advisories@github.com | https://github.com/devcode-it/openstamanager/security/advisories/GHSA-247v-7cw6-q57v | Exploit, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| devcode | openstamanager | * |
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"product": "openstamanager",
"vendor": "devcode-it",
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}
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GHSA-247V-7CW6-Q57V
Vulnerability from github – Published: 2026-03-03 17:43 – Updated: 2026-03-03 17:43
VLAI
Summary
OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php
Details
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:
$skip_permissions = true;
include_once __DIR__.'/../../core.php';
core.php then invokes:
Permissions::skip();
Thus, disabling any authentication and permission enforcement. As a result, this file processes operations based on the op parameter in the POST request, not only update_user. Sensitive fields like idgruppo and others can be updated without verifying anything.
PoC
A target username exists, such as "agent" with an ID of 4. No authentication or cookies are required. Send the following POST request via Burp Suite or similar:
The target's group is updated in the database.
Verify the changes in the database before and after the POST request:
Changes also visible in the administrator panel, they have been moved from the Agenti group to Amministratori.
Impact
An unauthenticated attacker can assign administrator privileges to existing users, modify group memberships, enable/disable accounts and other operations that are exposed in the file. This can lead to a full compromise of the application.
Severity
9.8 (Critical)
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"details": "### Summary\nA privilege escalation and authentication bypass vulnerability in OpenSTAManager allows any attacker to arbitrarily change a user\u0027s group (`idgruppo`) by directly calling `modules/utenti/actions.php`. This can promote an existing account (e.g. agent) into the Amministratori group as well as demote any user including existing administrators.\n\n### Details\n`modules/utenti/actions.php` is reachable directly via `http://\u003cIP\u003e:8080/modules/utenti/actions.php` and processes privileged information without requiring any authentication or authorization checks on fields like idgruppo. As a result, an attacker can submit a crafted POST request that updates the targets record and assigns it to the administrator group.\n\nThe file explicitly sets:\n```PHP\n$skip_permissions = true;\ninclude_once __DIR__.\u0027/../../core.php\u0027;\n```\n`core.php` then invokes:\n\n```PHP\nPermissions::skip();\n```\nThus, disabling any authentication and permission enforcement. As a result, this file processes operations based on the `op` parameter in the POST request, not only `update_user`. Sensitive fields like `idgruppo` and others can be updated without verifying anything.\n\n### PoC\nA target username exists, such as \"agent\" with an ID of 4. No authentication or cookies are required. Send the following POST request via Burp Suite or similar:\n\u003cimg width=\"1094\" height=\"255\" alt=\"image\" src=\"https://github.com/user-attachments/assets/2e8cb148-1b5d-4e5c-9c73-05ed75d64188\" /\u003e\nThe target\u0027s group is updated in the database.\nVerify the changes in the database before and after the POST request:\n\u003cimg width=\"1053\" height=\"430\" alt=\"image\" src=\"https://github.com/user-attachments/assets/49f63ca0-8a04-4dd1-b27c-69699d2ce26f\" /\u003e\nChanges also visible in the administrator panel, they have been moved from the Agenti group to Amministratori.\n\n### Impact\nAn unauthenticated attacker can assign administrator privileges to existing users, modify group memberships, enable/disable accounts and other operations that are exposed in the file. This can lead to a full compromise of the application.",
"id": "GHSA-247v-7cw6-q57v",
"modified": "2026-03-03T17:43:49Z",
"published": "2026-03-03T17:43:49Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/devcode-it/openstamanager/security/advisories/GHSA-247v-7cw6-q57v"
},
{
"type": "PACKAGE",
"url": "https://github.com/devcode-it/openstamanager"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "OpenSTAManager affected by unauthenticated privilege escalation via modules/utenti/actions.php"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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