What is CVE-2021-39109?

CVE-2021-39109 is a high-severity vulnerability in Atlassian Atlasboard, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-09-01.

How severe is CVE-2021-39109?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Atlassian Atlasboard

CVE-2021-39109

The renderWidgetResource resource in Atlasian Atlasboard before version 1.1.9 allows remote attackers to read arbitrary files via a path traversal vulnerability.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-09-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.017 (75.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Atlassian Atlasboard — versions unspecified

Weakness classification (CWE)

CWE-22 — Path Traversal

References

bitbucket.org/atlassian/atlasboard/commits/9c03df09f09399e2601010466e8ba3a28236… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39109?: CVE-2021-39109 is a high-severity vulnerability in Atlassian Atlasboard, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-09-01.
How severe is CVE-2021-39109?: High severity. CVSS v3 base score is 7.5 out of 10.