Auth bypass in Atlassian Crucible

CVE-2020-4026

The CustomAppsRestResource list resource in Atlassian Navigator Links before version 3.3.23, from version 4.0.0 before version 4.3.7, from version 5.0.0 before 5.0.1, and from version 5.1.0 before 5.1.1 allows remote attackers to enumerate all linked applications, including those that are restricted or otherwise hidden, through an incorrect authorization check.

Vulnerability class: Broken Access Control

EPSS: 0.007 (51.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-4026?
CVE-2020-4026 is a medium-severity vulnerability in Atlassian Crucible, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2020-06-03.
How severe is CVE-2020-4026?
Medium severity. CVSS v3 base score is 4.3 out of 10.