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CVE-2025-26515: Unauthenticated SSRF Vulnerability in StorageGRID

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Overview

This report details a significant vulnerability, identified as CVE-2025-26515, that affects previous versions of StorageGRID prior to 11.8.0.15 and 11.9.0.8 without Single Sign-On enabled. This vulnerability poses a serious threat as it can potentially allow an unauthenticated attacker to alter the password of any non-federated Grid Manager or Tenant Manager user. The severity of this vulnerability is underscored by its potential to compromise systems and lead to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-26515
Severity: High, CVSS score: 7.5
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

StorageGRID | versions prior to 11.8.0.15
StorageGRID Webscale | versions prior to 11.9.0.8

How the Exploit Works

This exploit takes advantage of a Server-Side Request Forgery (SSRF) vulnerability in StorageGRID. By sending a maliciously crafted request, an unauthenticated attacker can trick the server into changing the password of any non-federated Grid Manager or Tenant Manager user. This could potentially allow the attacker to gain unauthorized access to the system and possibly leak sensitive data.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. The attacker sends a malicious HTTP POST request, targeting the password change function of the server.

POST /api/change_password HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"username": "victim_user",
"new_password": "attacker_password"
}

In this example, `victim_user` would be the username of the targeted Grid Manager or Tenant Manager user and `attacker_password` would be the new password set by the attacker.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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