CVE-2026-41281 — Information Disclosure
CVE-2026-41281 — Android App "あんしんフィルター for au" provided by KDDI CORPORATION contains Cleartext Transmission of Sensitive Information (CWE-319) vulnerability. A man-in-the-middle attacker may access and modify communications transmitted in plaintext, potentially resulting in information disclosure o
What This Means For You
- If your environment is affected by CWE-319, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41281 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Cleartext Transmission of Sensitive Information in 'あんしんフィルター for au' - CVE-2026-41281
title: Cleartext Transmission of Sensitive Information in 'あんしんフィルター for au' - CVE-2026-41281
id: scw-2026-05-14-ai-1
status: experimental
level: medium
description: |
This rule detects potential cleartext transmission of sensitive information by the Android app 'あんしんフィルター for au' (CVE-2026-41281). It specifically looks for requests to a known endpoint within the app that contain sensitive parameters like 'password' or 'token' in the query string, indicating a CWE-319 vulnerability.
author: SCW Feed Engine (AI-generated)
date: 2026-05-14
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-41281/
tags:
- attack.exfiltration
- attack.t1041
logsource:
category: proxy
detection:
selection:
cs-uri|contains:
- '/anshin-filter/user/data'
cs-uri-query|contains:
- 'password='
- 'token='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41281 | vulnerability | CVE-2026-41281 |
| CWE-319 | weakness | CWE-319 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 14, 2026 at 03:16 UTC |
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