A critical authentication bypass vulnerability in Apache OFBiz, tracked as CVE-2026-45434, has been publicly disclosed, enabling attackers to bypass forced password-change restrictions and achieve full remote code execution (RCE) on vulnerable systems.
The flaw, disclosed between May 19 and 20, 2026, carries a CVSS 3.1 score of 9.8 and impacts all versions prior to 24.09.06, including both the legacy 18.12.x branch and the 24.09.x series up to 24.09.05.
Apache OFBiz is a widely adopted open-source ERP framework used across industries such as manufacturing, retail, and finance. Its exposure to the internet and integration with business-critical workflows make vulnerabilities like this particularly dangerous.
Apache OFBiz RCE Flaw
The vulnerability originates in the LoginWorker.checkLogin() method, responsible for handling authentication logic. When administrators enable the requirePasswordChange flag for a user, the system should enforce a password reset before granting access.
However, flawed logic in checkLogin() only checks whether the return value of the login() function equals "error".
If a user account is flagged for a password change, the system returns "requirePasswordChange" instead of "error". Due to improper validation, this response is mistakenly treated as a successful login. This allows attackers with valid credentials to bypass authentication controls.
Attackers can further manipulate this behavior by injecting the requirePasswordChange=Y parameter into HTTP requests. This enables inline password changes and unauthorized access to protected endpoints within a single POST request.
The vulnerability becomes significantly more severe when chained with the ProgramExport.groovy endpoint. In affected versions, this endpoint lacks proper authorization checks and does not enforce a Groovy sandbox, allowing arbitrary code execution.
By leveraging the authentication bypass, attackers can access ProgramExport and execute malicious Groovy scripts, resulting in full OS-level command execution. This attack path mirrors previous OFBiz vulnerabilities, including CVE-2024-45195 and CVE-2024-38856, which also abused the same endpoint.
Researchers from Aretiq AI noted that the issue closely resembles CVE-2023-51467, indicating that the root cause in password-change logic was not fully resolved in earlier patches.
The risk of exploitation is exceptionally high due to default configurations. Apache OFBiz ships with multiple demo accounts such as admin, flexadmin, and demoadmin, all using the default password ofbiz. If these credentials remain unchanged in exposed environments, attackers can easily gain initial access.
Successful exploitation provides full JVM-level access, enabling:
- Arbitrary OS command execution
- Database access and data exfiltration
- Deployment of persistent backdoors
- Lateral movement across internal networks
In observed test environments, OFBiz instances running as root resulted in complete system compromise. A public proof-of-concept exploit targeting OFBiz 24.09.05 on OpenJDK 17 (Ubuntu 24.04) demonstrated successful privilege escalation, returning uid=0(root).
Patch and Mitigation
Apache addressed CVE-2026-45434 in version 24.09.06 through multiple security fixes:
- Removed the client-controlled
requirePasswordChangeparameter; validation now relies on server-side state - Added
ENTITY_MAINTpermission checks to theProgramExport.groovyendpoint - Implemented a
SecureASTCustomizerGroovy sandbox with strict import allowlisting and method restrictions
Organizations should immediately upgrade to version 24.09.06 or later.
Additional mitigation steps include:
- Auditing and removing default or weak credentials
- Disabling demo accounts and sample data in production
- Restricting external access to
/webtools/control/ProgramExport - Monitoring for suspicious requests containing
requirePasswordChange=Yand Groovy payloads
Detection can be enhanced using Suricata rules targeting exploit patterns and YARA signatures to identify vulnerable source files such as LoginWorker.java and ProgramExport.groovy.
Given the ease of exploitation and availability of public PoC code, unpatched Apache OFBiz instances are highly susceptible to active attacks. Immediate remediation and continuous monitoring are strongly recommended.
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