What is CVE-2021-20747?

CVE-2021-20747 is a medium-severity vulnerability in Retty, classified under Missing Authorization. CVSS score: 4.3/10. Published 2021-07-14.

How severe is CVE-2021-20747?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Retty

CVE-2021-20747

Improper authorization in handler for custom URL scheme vulnerability in Retty App for Android versions prior to 4.8.13 and Retty App for iOS versions prior to 4.11.14 allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.

Vulnerability class: Broken Access Control

EPSS: 0.010 (59.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Retty
Retty Inc. App — versions Retty App for Android versions prior to 4.8.13 and Retty App for iOS versions prior to 4.11.14

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20747?: CVE-2021-20747 is a medium-severity vulnerability in Retty, classified under Missing Authorization. CVSS score: 4.3/10. Published 2021-07-14.
How severe is CVE-2021-20747?: Medium severity. CVSS v3 base score is 4.3 out of 10.