CVE-2026-47782: RoboForm Password Manager Vulnerability

CVE-2026-47782 Overview

CVE-2026-47782 affects the RoboForm Password Manager Android application developed by Siber Systems, Inc. The application processes Android intents without sufficient URL validation, user confirmation, or user notification. An attacker who can deliver a crafted intent containing a malicious URL can cause RoboForm to silently download files from attacker-controlled web pages. The user receives no prompt and no indication that a download has occurred. The flaw is classified under CWE-357: Insufficient UI Warning of Dangerous Operations and falls into the Mobile App Vulnerability category, specifically intent handling and client-side injection.

Critical Impact

Malicious applications or web pages on the same device can trigger RoboForm to download arbitrary files without user awareness, creating a staging vector for follow-on mobile attacks.

Affected Products

• RoboForm Password Manager for Android (Siber Systems, Inc.)
• Distributed via the Google Play Store
• Refer to RoboForm Android release notes for fixed version information

Discovery Timeline

• 2026-05-20 - CVE-2026-47782 published to the National Vulnerability Database
• 2026-05-20 - Last updated in NVD database
• Coordinated disclosure published via the JVN Security Advisory

Technical Details for CVE-2026-47782

Vulnerability Analysis

The RoboForm Android application exposes intent handlers that accept URLs from external callers. The application fetches content referenced by the URL and writes it to device storage. The download path does not validate the destination URL against an allowlist, prompt the user for confirmation, or display a notification while the transfer completes.

This behavior maps to CWE-357 because the security-relevant operation, downloading remote content to the device, occurs without an interface warning. Any process that can dispatch an intent to the RoboForm component, including another installed application or a web page resolved through a browser intent, can initiate the download.

The issue is a local attack vector under CVSS 4.0 because intent delivery requires presence on the device. User interaction is limited to opening a malicious link or installing a malicious helper application. Confidentiality impact is none, and integrity impact is low because the attacker writes attacker-controlled bytes to storage but does not directly execute them.

Root Cause

The root cause is missing input validation and missing UI feedback in the intent-handling code path. RoboForm trusts the URL string supplied by the caller and proceeds to download without surfacing the operation to the user.

Attack Vector

An attacker hosts a malicious file on a controlled web server. The attacker then crafts an Android intent referencing that URL and delivers it through a companion malicious app or a redirect from a web page. RoboForm processes the intent, downloads the file silently, and stores it in the application's accessible storage location. The vulnerability mechanism is described in the linked JVN advisory; no verified proof-of-concept code is published.

Detection Methods for CVE-2026-47782

Indicators of Compromise

• Unexpected files appearing in the RoboForm application's download or cache directories on Android devices
• Outbound network connections from the com.siber.roboform package to domains unrelated to RoboForm cloud infrastructure
• Intents targeting com.siber.roboform activities that carry external http:// or https:// URI extras from non-RoboForm packages

Detection Strategies

• Inspect mobile device management (MDM) telemetry for installed RoboForm versions and compare against the vendor's fixed release notes
• Use mobile threat defense tooling to flag inter-app intent activity that delivers external URLs to password manager components
• Review proxy or DNS logs for HTTP downloads initiated by the RoboForm package toward unexpected destinations

Monitoring Recommendations

• Forward Android application inventory and version data to a central log platform and alert on RoboForm versions below the patched build
• Monitor for new files written by com.siber.roboform outside of expected vault sync paths
• Track installation of unknown third-party applications on devices that also have RoboForm installed, since the attack requires a delivery vehicle on the same device

How to Mitigate CVE-2026-47782

Immediate Actions Required

• Update RoboForm Password Manager for Android to the latest version published on the Google Play Store
• Review the RoboForm Android news page to confirm the fixed version number before validating remediation
• Audit managed Android devices through MDM and push the update to noncompliant endpoints

Patch Information

Siber Systems distributes RoboForm for Android through the Google Play Store. Users and administrators should consult the vendor's release notes and the JVN advisory for the specific fixed version that addresses CVE-2026-47782. Enabling automatic updates in Google Play ensures the patched build is delivered without manual intervention.

Workarounds

• Restrict installation of unvetted third-party applications on devices that store credentials in RoboForm, reducing the population of processes that can deliver malicious intents
• Train users to avoid following links that prompt unexpected app launches or transitions into the RoboForm application
• On managed fleets, use MDM policies to limit which applications can send implicit intents to the RoboForm package until devices are updated