CVE-2026-108160 in AstronRPA
Summary
by MITRE • 10/09/2026
AstronRPA through 1.1.6 contains a download of code without integrity check vulnerability that allows network attackers to deliver malicious updates by abusing the desktop client's auto-update mechanism. Attackers positioned between the client and server can serve a malicious update manifest and NSIS installer, which electron-updater installs without signature verification, executing code as the desktop user.
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Analysis
by VulDB Data Team • 10/09/2026
The identified vulnerability in AstronRPA versions through 1.1.6 represents a critical failure in software supply chain security, specifically categorized under CWE-829, which denotes inclusion of functionality from outside control without integrity checks. This flaw resides within the application's auto-update mechanism, which relies on electron-updater to manage version transitions and patch deployments. The core technical deficiency is the absence of cryptographic signature verification for downloaded artifacts. In a secure implementation, any binary or configuration file retrieved during an update process must be validated against a trusted public key to ensure it originated from the legitimate vendor and has not been tampered with in transit. By omitting this step, the application effectively trusts all content delivered by its update server without validation, creating a significant trust boundary violation that undermines the integrity of the software execution environment.
The operational impact of this vulnerability is severe due to the potential for man-in-the-middle attacks against the communication channel between the desktop client and the update server. An attacker positioned within the network path can intercept the update request and respond with a maliciously crafted manifest file alongside a compromised NSIS installer package. Because electron-updater proceeds to install these files without verifying their digital signatures, the malicious code is executed with the privileges of the currently logged-in desktop user. This execution model allows for immediate arbitrary code execution on the victim's machine. The attacker can leverage this access to establish persistence, exfiltrate sensitive data stored locally by the RPA software, or use the compromised workstation as a pivot point for further lateral movement within the corporate network.
From an offensive security perspective, this vulnerability aligns with MITRE ATT&CK technique T1195, specifically Supply Chain Compromise, where attackers target trusted third-party services to distribute malware. It also relates to T1059, Command and Scripting Interpreter, as the NSIS installer is used to execute arbitrary commands on the system. The lack of code signing verification means that even if network traffic is encrypted via TLS, a compromised certificate authority or a successful SSL stripping attack could facilitate this exploit without triggering standard security warnings for end-users who may not verify digital signatures manually. This scenario highlights the risks associated with relying solely on transport-layer encryption while neglecting application-level integrity checks for binary updates.
Mitigation strategies must focus on implementing robust cryptographic verification mechanisms immediately. The primary remediation involves configuring electron-updater to enforce strict signature validation using a trusted public key before any installer is executed. Developers should ensure that update manifests are signed and that the client verifies these signatures against known good keys stored securely within the application bundle or retrieved via secure out-of-band channels if necessary. Additionally, implementing certificate pinning for the update server can prevent man-in-the-middle attacks by ensuring the client only accepts connections from specific, verified certificates. For organizations currently running affected versions, it is critical to monitor network traffic for anomalous update requests and consider disabling auto-updates until a patched version that enforces integrity checks is released and deployed across all endpoints.