Auth bypass in Skylark

CVE-2023-40530

Improper authorization in handler for custom URL scheme issue in 'Skylark' App for Android 6.2.13 and earlier and 'Skylark' App for iOS 6.2.13 and earlier allows an attacker to lead a user to access an arbitrary website via another application installed on the user's device.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-40530: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-40530?
CVE-2023-40530 is a medium-severity vulnerability in Skylark, classified under Missing Authorization. CVSS score: 4.7/10. Published 2023-08-25.
How severe is CVE-2023-40530?
Medium severity. CVSS v3 base score is 4.7 out of 10.
Is CVE-2023-40530 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.