CVE-2026-24330 in WildFly
Summary
by MITRE • 08/11/2026
A flaw was found in wildfly-core. A remote attacker, authenticated as a 'deployer' account, can import and deploy a malicious archive file from an untrusted source. This is achieved by leveraging WildFly libraries to craft a Java project that allows an HTTP POST request to upload and deploy the malicious archive. This could lead to further exploitation, such as arbitrary file read vulnerabilities.
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Analysis
by VulDB Data Team • 08/11/2026
The vulnerability identified in wildfly-core represents a critical privilege escalation and remote code execution risk within Red Hat's application server ecosystem. This flaw specifically targets authenticated users with 'deployer' roles, creating a dangerous attack vector where legitimate administrative privileges can be exploited to gain unauthorized system access. The vulnerability stems from insufficient validation of archive files during the deployment process, allowing malicious actors to upload and execute arbitrary code through carefully crafted Java archives. The attack requires only a minimal privilege level, making it particularly concerning for environments where deployer accounts may have broader network access than intended.
The technical implementation of this vulnerability leverages WildFly's native deployment mechanisms to accept HTTP POST requests containing malicious archive files. When a deployer account uploads an archive, the system processes it through internal Java libraries without adequate sanitization or validation checks. This process creates a path where attackers can bypass normal security controls by crafting specific archive structures that exploit the deployment pipeline. The vulnerability is particularly insidious because it operates within the legitimate deployment framework, making detection more difficult for security monitoring systems. It allows attackers to potentially escalate privileges beyond their initial access level and could lead to full system compromise through additional vulnerabilities such as arbitrary file read capabilities.
The operational impact of this vulnerability extends far beyond simple code execution, creating cascading security risks throughout enterprise environments that rely on WildFly servers. Organizations with multiple deployment targets or those using automated deployment processes face heightened risk, as attackers can potentially deploy malicious payloads across entire server fleets with minimal detection. The ability to perform arbitrary file reads amplifies the threat model, allowing attackers to access sensitive configuration files, database credentials, and other confidential data stored within the application server environment. This vulnerability directly impacts the principle of least privilege, as it allows attackers to exploit legitimate administrative functions for malicious purposes, potentially leading to data breaches, service disruption, or complete system compromise.
Mitigation strategies for this vulnerability should focus on immediate patching of affected WildFly-core versions while implementing additional security controls. Organizations must ensure all deployer accounts have the minimum necessary privileges and implement strict access controls for deployment operations. Network segmentation and monitoring of deployment activities can help detect anomalous behavior, while regular security audits should verify that archive validation mechanisms are properly configured. The vulnerability aligns with CWE-434 which addresses insecure file upload vulnerabilities, and its exploitation patterns match techniques documented in the attack framework under ATT&CK technique T1059 for command and scripting interpreter. Additionally, implementing network-based intrusion detection systems that monitor for suspicious HTTP POST requests containing archive files can provide early warning capabilities against such attacks.