CVE-2021-20835

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory jvn.jp
Affected: Mercari, Inc. Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)
Published at:
Updated at:

References

Link Tags
https://jvn.jp/en/jp/JVN49465877/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20835?
CVE-2021-20835 has been scored as a high severity vulnerability.
How to fix CVE-2021-20835?
To fix CVE-2021-20835, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20835 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20835 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20835?
CVE-2021-20835 affects Mercari, Inc. Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version).
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