CVE-2026-5456 Overview
A hard-coded cryptographic key vulnerability has been identified in Align Technology My Invisalign App version 3.12.4 on Android. The vulnerability exists within the com/aligntech/myinvisalign/BuildConfig.java file of the com.aligntech.myinvisalign.emea component, where the manipulation of the CDAACCESS_TOKEN argument reveals a hard-coded cryptographic key. This type of vulnerability can allow attackers with local access to extract sensitive cryptographic material embedded directly in the application code.
Critical Impact
Local attackers can extract hard-coded cryptographic keys from the application, potentially enabling unauthorized access to protected resources or decryption of sensitive data.
Affected Products
- Align Technology My Invisalign App 3.12.4 (Android)
- com.aligntech.myinvisalign.emea component
Discovery Timeline
- April 3, 2026 - CVE-2026-5456 published to NVD
- April 3, 2026 - Last updated in NVD database
Technical Details for CVE-2026-5456
Vulnerability Analysis
This vulnerability falls under CWE-320 (Key Management Errors), specifically involving the use of hard-coded cryptographic keys within the application's build configuration. The BuildConfig.java file contains the CDAACCESS_TOKEN parameter with embedded cryptographic material that should be securely managed outside of the application codebase. Hard-coded credentials and keys are a well-known anti-pattern in secure software development, as they can be extracted through static analysis or reverse engineering of the application package.
The exploit requires local access to the device or the APK file, and the attacker needs low-level privileges to extract the token. Once obtained, the cryptographic key could potentially be used to access Contentful CDA (Content Delivery API) resources, potentially exposing application content from master and release environments.
Root Cause
The root cause of this vulnerability is the improper key management practice of embedding cryptographic tokens directly within the application's source code. The CDAACCESS_TOKEN value is compiled into the BuildConfig.java file, making it accessible to anyone who can decompile or reverse engineer the Android APK. Proper security practices dictate that such sensitive tokens should be retrieved from secure backend services at runtime or stored in platform-specific secure storage mechanisms.
Attack Vector
The attack vector is local, requiring an attacker to have access to the device or the application package file. The attack scenario involves:
- Obtaining the My Invisalign App APK through device backup, APK download sites, or direct device access
- Decompiling the APK using standard Android reverse engineering tools (such as jadx or apktool)
- Locating the BuildConfig.java file within the com.aligntech.myinvisalign.emea package
- Extracting the hard-coded CDAACCESS_TOKEN value
- Using the extracted token to potentially access Contentful CDA resources
The vulnerability is publicly documented, with technical details available through VulDB Vulnerability #355044 and security analysis documentation.
Detection Methods for CVE-2026-5456
Indicators of Compromise
- Presence of My Invisalign App version 3.12.4 on Android devices
- Unauthorized access to Contentful CDA endpoints using extracted tokens
- Unusual API requests to content delivery services associated with the application
Detection Strategies
- Implement mobile application security scanning to detect hard-coded credentials in APK files
- Monitor API access logs for requests using potentially compromised tokens
- Deploy mobile threat defense (MTD) solutions to identify vulnerable application versions
Monitoring Recommendations
- Review installed application versions on managed Android devices
- Monitor for unauthorized access patterns to backend content delivery services
- Implement application version control policies requiring updates to patched versions
How to Mitigate CVE-2026-5456
Immediate Actions Required
- Update to a newer version of the My Invisalign App if available
- Consider uninstalling the application until a patched version is released
- Rotate any potentially exposed API tokens on the backend infrastructure
- Monitor for unauthorized access using the exposed token
Patch Information
The vendor (Align Technology) was contacted about this disclosure but did not respond. No official patch information is currently available. Users should monitor official application update channels for security releases.
Workarounds
- Remove version 3.12.4 of the My Invisalign App from devices until a patch is available
- Implement network-level monitoring to detect unauthorized API token usage
- Consider backend token rotation and implementing additional authentication layers
- Apply mobile device management (MDM) policies to restrict vulnerable application versions
Organizations using the My Invisalign App in enterprise environments should assess the risk based on their deployment scope and consider implementing compensating controls until the vendor provides a security update.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
