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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (53.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Atlassian Crucible — versions unspecified
- Atlassian Fisheye — versions unspecified
- Atlassian Navigator Links — versions unspecified, 4.0.0, 5.0.0
- Atlassian Navigator Links
Weakness classification (CWE)
References
- jira.atlassian.com/browse/FE-7299 (Vendor Advisory)
- jira.atlassian.com/browse/CRUC-8485 (Vendor Advisory)
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.