CVE-2021-20835 - CVE House
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Status published High CVE-2021-20835

Improper authorization in handler for custom URL scheme vulnerability in...

Vulnerability Description

Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49.1 allows a remote attacker to lead a user to access an arbitrary website and the website launches an arbitrary Activity of the app via the vulnerable App, which may result in Mercari account's access token being obtained.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from Mercari, Inc.

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CVE-2024-23388
Improper authorization in handler for custom URL scheme issue in...
Unknown 0
CVE-2020-5604
Android App 'Mercari' (Japan version) prior to version 3.52.0 allows...
High 8.1

Affected Vendor

Mercari, Inc.

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Affected Software

Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)
Vulnerable Versions:
versions prior to 4.49.1

Timeline

Official Publish: November 24th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.