KL-001-2026-01: yintibao Fun Print Mobile Unauthorized Access via Context Hijacking

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KL-001-2026-01: yintibao Fun Print Mobile Unauthorized Access via Context Hijacking

Title: yintibao Fun Print Mobile Unauthorized Access via Context Hijacking
Advisory ID: KL-001-2026-001
Publication Date: 2026-01-08
Publication URL: https://korelogic.com/Resources/Advisories/KL-001-2026-001.txt


1. Vulnerability Details

     Affected Vendor: yintibao
     Affected Product: Fun Print Mobile
     Affected Version: 6.05.15
     Platform: ARM64 - Android
     CWE Classification: CWE-926: Improper Export of Android
                         Application Components
     CVE ID: CVE-2025-15464


2. Vulnerability Description

     Exported Activity allows external applications to gain
     application context and directly launch Gmail with inbox access,
     bypassing security controls.


3. Technical Description

     * Performed on Android 13 aarch64 - Samsung (Galaxy Tab A7 Lite)
     * Using Frida client on Ubuntu 24.04 LTS - Frida server on
       Samsung Rooted Device.
     * The target Activity is exported true. Which means any
       application may interact with it, given that permissions are
       provided.
     * The attacking host needs to attach the device email to the
       application; then the account can be used by the application.

     The PandoraEntry activity is exported (android:exported="true")
     and processes external intents without validation.  Below is
     the PandoraEntryActivity code:

     protected void onCreate(Bundle bundle) {
         // ... INITALIZATION CODE ...  super.onCreate(bundle);

         // BELOW EXTERNAL INTENT ACCEPTED WITHOUT VALIDATION Intent
         intent = getIntent();

         // ... PROCESSING CONTINUES WITH UNVALIDATED INTENT ...
         if (intent.hasExtra(IntentConst.START_FROM_TO_CLASS) &&
         SDK.isUniMPSDK()) {
             String stringExtra =
 intent.getStringExtra(IntentConst.START_FROM_TO_CLASS);
             if (!TextUtils.isEmpty(stringExtra) &&
 stringExtra.startsWith("io.dcloud.feature.sdk.multi")) {
                 intent.setClassName(getPackageName(), stringExtra);
 intent.removeExtra(IntentConst.START_FROM_TO_CLASS);
             }
         } else {
 intent.putExtra(IntentConst.WEBAPP_SHORT_CUT_CLASS_NAME,
             PandoraEntry.class.getName()); intent.setClass(this,
             PandoraEntryActivity.class);
         }

         //UNVALIDATED INTENT FORWARDED startActivity(intent);
         overridePendingTransition(0, 0);
     }


4. Mitigation and Remediation Recommendation

     No response from vendor. There are no known mitigations to
     end-users of the affected application version(s).

5. Credit

     This vulnerability was discovered by Felix Segoviano of
     KoreLogic, Inc.


6. Disclosure Timeline

     2025-12-01 : KoreLogic requests security contact from vendor
                  via weizhengsl () vip qq com and 277517409 () qq com.
     2025-12-08 : KoreLogic submits vulnerability details to vendor
                  via weizhengsl () vip qq com and 277517409 () qq com.
     2026-01-08 : KoreLogic public disclosure.


7. Proof of Concept

     URL: https://korelogic.com/Resources/Advisories/KL-001-2026-001.poc.js.txt
     SHA256sum: ddb3c840c94b204fbbe2931a68771ae28d8ea9c778310cfa83e218a64a41ffd5



The contents of this advisory are copyright(c) 2026
KoreLogic, Inc. and are licensed under a Creative Commons
Attribution Share-Alike 4.0 (United States) License:
http://creativecommons.org/licenses/by-sa/4.0/

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