CVE-2026-120324 in Zilla
Summary
by MITRE • 11/02/2026
A weakness has been identified in Aklivity Zilla up to 1.3.4/2.4.7/2.5.0-rc2. The affected element is the function Path.resolve of the file FileSystemServerFactory of the component http-filesystem Binding. This manipulation of the argument params causes path traversal. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. Upgrading to version 2.5.0-rc3 is sufficient to fix this issue. Patch name: 46a8b15cbea157f7ae8b7cb865809a02fd6b1988. You should upgrade the affected component.
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Analysis
by VulDB Data Team • 11/02/2026
A critical security vulnerability has been identified within Aklivity Zilla, specifically affecting versions up to 1.3.4, 2.4.7, and 2.5.0-rc2. The flaw resides in the Path.resolve function located within the FileSystemServerFactory component of the http-filesystem binding module. This vulnerability represents a classic path traversal issue where improper validation or resolution of file system paths allows an attacker to access files and directories that are situated outside the intended root directory. By manipulating the input parameters passed to this function, an adversary can construct maliciously crafted requests designed to escape the sandboxed environment defined by the application's configuration. This type of weakness is formally categorized under CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which highlights the failure to properly neutralize special elements within file paths that could cause unintended access to restricted resources.
The operational impact of this vulnerability is severe due to its remote exploitability. Since the http-filesystem binding handles HTTP requests related to static file serving or resource retrieval, an attacker does not need local system access or authentication credentials to leverage this flaw. By sending specifically crafted HTTP requests containing directory traversal sequences such as dot-dot-slash patterns in the URL path parameters, a malicious actor can read sensitive configuration files, source code, environment variables, or other critical data stored on the server's file system. This capability effectively breaks the isolation boundaries of the application, potentially leading to unauthorized disclosure of confidential information. In many deployment scenarios involving Aklivity Zilla as an API gateway or edge proxy, such exposure could reveal internal network topology details, database credentials embedded in configuration files, or proprietary business logic contained within source code repositories accidentally made accessible through misconfigured static file serving endpoints.
The existence of a publicly available exploit significantly elevates the risk profile associated with this vulnerability. Attackers can utilize automated tools to scan for vulnerable instances and execute path traversal attacks without requiring custom development efforts. This lowers the barrier to entry for opportunistic attackers who may not possess deep technical expertise but seek quick wins against poorly patched systems. The exploitation of CWE-22 in this context aligns with techniques observed in the MITRE ATT&CK framework, particularly those related to Collection and Exfiltration over Alternative Protocol mechanisms where data is retrieved from local file systems via network services. If an attacker gains access to sensitive files, they may further leverage that information for subsequent attacks such as credential stuffing, privilege escalation, or lateral movement within a compromised environment.
To mitigate this risk, immediate action is required by upgrading Aklivity Zilla to version 2.5.0-rc3 or any later stable release where the vulnerability has been addressed. The specific patch addressing this issue is identified by commit hash 46a8b15cbea157f7ae8b7cb865809a02fd6b1988, which likely introduces stricter input validation and canonicalization logic within the Path.resolve function to ensure that resolved paths remain strictly within the designated root directory. Organizations should verify their current version against this threshold and apply updates during scheduled maintenance windows. In addition to upgrading, administrators should review access controls on static file serving endpoints to ensure they are not exposing sensitive directories unnecessarily. Implementing web application firewall rules that detect common path traversal patterns can provide an additional layer of defense in depth while patching efforts are completed. Regular security audits and dependency management practices will help prevent similar vulnerabilities from persisting in production environments.