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CVE-2026-22588: Medium Vulnerability in Spree Commerce

A medium-severity Authenticated Insecure Direct Object Reference (IDOR) vulnerability in Spree allows authenticated users to access other users' address information by manipulating requests. Immediate patching is essential to mitigate risks.

MEDIUMCVSS 6.5 · Published January 8, 2026

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CVE-2026-22588 is a medium-severity vulnerability impacting Spree, an open-source e-commerce solution built with Ruby on Rails. This vulnerability allows an authenticated user to perform an Authenticated Insecure Direct Object Reference (IDOR) by modifying an existing order to access other users’ address information. Specifically, by altering address identifiers in requests related to orders they own, attackers can retrieve sensitive data from other users.

The vulnerability has a CVSS score of 6.5, indicating a medium level of severity. The potential impact includes unauthorized access to sensitive user information, which could lead to privacy violations and other security risks. Organizations using affected versions of Spree should prioritize remediation to protect user data.

This vulnerability has been patched in versions 4.10.2, 5.0.7, 5.1.9, and 5.2.5. Organizations that have not yet upgraded should take immediate action. The risk to organizations includes the possibility of data breaches and reputational damage due to unauthorized data exposure.

Based on the current exploitation status, there are no known public exploits or active exploitation. However, the low complexity of the attack means that it is essential for organizations to remain vigilant and ensure proper patching.

Vulnerability Details

The official description states that this vulnerability allows an authenticated user to retrieve other users’ address information by modifying an existing order. The affected versions are prior to 4.10.2, 5.0.7, 5.1.9, and 5.2.5. The vulnerability is classified under CWE-639, indicating an IDOR vulnerability.

The CVSS score of 6.5 signifies medium severity. The attack vector is via the network, with low attack complexity and low privileges required. The confidentiality impact is high, while integrity and availability impacts are none.

Technical Analysis

The root cause of the vulnerability lies in improper access control mechanisms within the Spree application. Specifically, the backend server processes address identifiers without adequately verifying the ownership of the data, allowing attackers to manipulate requests to gain unauthorized access.

The attack vector requires network access, and the complexity is low since it does not require any special conditions or user interaction. An attacker with low privileges can exploit this flaw, leading to high confidentiality impact as they may access sensitive user address data.

Risk & Impact Analysis

Organizations utilizing versions of Spree that are vulnerable to CVE-2026-22588 face significant risks. The ability for attackers to access other users’ address information poses a direct threat to user privacy and data security. The blast radius extends to all users of the affected application, potentially leading to widespread data exposure.

Given the CVSS score of 6.5 and the recent analysis indicating that this vulnerability is not actively exploited in the wild, organizations should still prioritize patching as part of their security best practices. The potential for exploitation remains, especially given the low complexity of the attack.

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

The following versions of Spree are affected by this vulnerability: All versions prior to 4.10.2, 5.0.7, 5.1.9, and 5.2.5. Organizations are advised to upgrade to these versions or later to ensure protection against IDOR vulnerabilities.

Mitigation & Remediation

To mitigate the risks associated with CVE-2026-22588, organizations should apply the following measures:

1. Upgrade to Spree versions 4.10.2, 5.0.7, 5.1.9, or 5.2.5 to remediate the vulnerability.

2. Implement access control measures to validate ownership of resources before processing requests.

3. Regularly review and audit application security practices to identify and correct potential vulnerabilities.

For comprehensive assessments, organizations can consider application security assessments to identify weaknesses.

Detection Guidance

Organizations should monitor for the following indicators to detect potential exploitation of CVE-2026-22588:

1. Log access attempts to address information APIs, especially those involving order modifications.

2. Review for any abnormal patterns in user behavior where address information is accessed.

AppSecure Threat Intelligence Insight

CVE-2026-22588 highlights the ongoing challenges posed by IDOR vulnerabilities in web applications. Security teams should consider the lessons learned from this incident to strengthen their defenses against similar issues in the future.

For further reading on vulnerability management and secure coding practices, organizations can refer to resources such as the vulnerability management program and the best practices for secure coding to prevent similar vulnerabilities.

Lastly, continuous engagement in security practices, such as penetration testing and threat modeling can significantly enhance an organization's security posture.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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