CVE-2026-66832

Received Received - Intake

Mira Android App Session Token Exposure via WebView

Publication date: 2026-08-11

Last updated on: 2026-08-12

Assigner: ICS-CERT

Description

When the Mira Android app opens in-app WebView content (e.g., shop redirect flows), the user's live session token is appended to the URL as a query string parameter, and a persistent user identifier is included in the WebView's User-Agent header. Both are then transmitted to third-party web properties, referrer logs, and any JavaScript running in the WebView context.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-12

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-66832

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-598	The web application uses the HTTP GET method to process a request and includes sensitive information in the query string of that request.

Attack-Flow Graph

Executive Summary

This vulnerability involves the Mira Android app leaking sensitive user session tokens and identifiers when loading third-party web content. The app appends the live session token to URLs as a query parameter and includes a persistent user identifier in the WebView's User-Agent header. This data is then exposed to third-party websites, referrer logs, and JavaScript running in the WebView.

Detection Guidance

To detect this vulnerability, monitor network traffic for URLs containing session tokens or persistent user identifiers transmitted to third-party domains. Inspect WebView User-Agent headers for embedded identifiers. Use tools like Wireshark or tcpdump to capture and analyze HTTP/HTTPS traffic from the Mira Android app.

Impact Analysis

An attacker could intercept the session token from URLs or User-Agent headers to hijack your account without needing credentials. The persistent identifier may allow tracking or correlation of your activity across different services. Third parties receiving this data could misuse it for targeted attacks or unauthorized access.

Compliance Impact

This vulnerability likely violates GDPR due to unauthorized transmission of personal data (session tokens, identifiers) to third parties without explicit user consent. It may also breach HIPAA if protected health information is exposed through session tokens or tracking identifiers in WebView contexts.

Mitigation Strategies

Disable the Mira Android app's in-app WebView functionality to prevent session tokens and user identifiers from being exposed in URLs and User-Agent headers. Review third-party integrations to ensure no sensitive data is transmitted unintentionally.

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