Critical Authentication Bypass Vulnerability Discovered in Apache OFBiz

A serious vulnerability has been identified in Apache OFBiz, an open-source Enterprise Resource Planning (ERP) platform widely used for managing various business processes. This flaw allows attackers to exploit a critical authentication bypass, enabling them to hijack forced password-change flows and ultimately achieve remote code execution (RCE) through a single HTTP request. The vulnerability affects all versions of Apache OFBiz that are below version 24.09.06.

Vulnerability Overview

The vulnerability has been assigned the CVE ID CVE-2026-45434 and has received a CVSS 3.1 score of 8.8, indicating a high severity level. The issue was disclosed to the public on May 20, 2026, by researcher Aretiq AI, spotlighting vulnerabilities that could lead to significant security breaches.

When a user account is flagged by an administrator with the parameter requirePasswordChange=Y—for instance, following a data breach or during user onboarding—this account should typically remain inactive until the user has successfully reset their password. However, a flaw in the LoginWorker.checkLogin() method fails to properly recognize this flag as an authentication failure.

Mechanism of Exploitation

Researchers at Aretiq AI uncovered that the checkLogin() method inadequately processes the return value of requirePasswordChange. This method only validates against an error string, allowing a “requirePasswordChange” response from the login function to be mistakenly construed as a successful authentication. This oversight presents a significant opportunity for attackers.

To compound this issue, the method reads the requirePasswordChange flag directly from an attacker-controlled HTTP request parameter instead of querying the database. Consequently, an attacker can manipulate the password-change flow to access any secured endpoint by simply submitting a POST request.

In addition to these two flaws, a third vulnerability exists in the ProgramExport.groovy file, which, prior to version 24.09.06, did not impose requisite permission controls nor utilize a Groovy sandbox. This lapse opens the door for attackers to execute arbitrary code as the OFBiz process user.

The attack operates in a three-step process:

1. Authentication Bypass: Due to the method’s design in checkLogin(), if the login attempt returns "requirePasswordChange," the method incorrectly evaluates it as a successful login, thus bypassing real authentication.

2. Manipulating Flags: An attacker can inject the requirePasswordChange parameter directly within the HTTP request, submitting valid credentials and a chosen new password. This capability triggers an inline password change via the updatePassword service, establishing a fully authenticated session in just one request.

3. Unsandboxed Execution: In the vulnerable versions of the software, the ProgramExport.groovy file allows for the evaluation of user-supplied Groovy code without sufficient security checks. This grants attackers wide-ranging access, enabling OS command execution through the Java Virtual Machine (JVM).

Testing on version 24.09.05 of OFBiz revealed that a crafted POST request to the /webtools/control/ProgramExport endpoint led to remote code execution, effectively giving the attacker root access.

Implications for Users

Apache OFBiz includes over ten demo accounts, such as admin, flexadmin, demoadmin, and ltdadmin, all set to the default password of ofbiz. This means that developmental and production environments are notably vulnerable and can be exploited with minimal effort, particularly without prior reconnaissance.

Moreover, this vulnerability bears similarities to another related flaw, CVE-2023-51467, which pertains to the requirePasswordChange logic, receiving a critical score of 9.8 from MITRE/NVD. This elevates the urgency for organizations to pay attention to these vulnerabilities.

Mitigation and Recommendations

Apache has patched the vulnerability in version 24.09.06 through several key commits aimed at fortifying the platform:

1. Remove the client-controlled requirePasswordChange HTTP parameter entirely.
2. Introduce a permission check for ProgramExport.groovy to restrict unauthorized or low-privilege access.
3. Implement a strict Groovy sandbox to enhance security against malicious code execution.

To safeguard against exploitation, organizations are advised to take immediate action by upgrading to Apache OFBiz 24.09.06. Additionally, it is crucial to deactivate or change the default passwords of all demo accounts before exposing any OFBiz instance to the network.

Organizations should also restrict access to /webtools/control/ProgramExport at the Web Application Firewall (WAF) or reverse proxy level and conduct thorough audits of user accounts marked with the requirePasswordChange=Y flag to ensure they are correctly enforced post-upgrade.

In conclusion, the discovery of CVE-2026-45434 in Apache OFBiz serves as a critical reminder of the vulnerabilities that can persist in widely-used software, urging all users to implement proactive security measures. The implications are significant, as organizations must remain vigilant to protect their systems and mitigate potential risks.

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