Cyber Resilience

CVE-2021-39112

Medium

Published: 25 August 2021

Published
25 August 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0020 41.6th percentile
Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-39112 is a medium-severity Use of Web Link to Untrusted Target with window.opener Access (CWE-1022) vulnerability in Atlassian Jira Data Center. Its CVSS base score is 4.8 (Medium).

Operationally, ranked at the 41.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to redirect users to a malicious URL via a reverse tabnapping vulnerability in the Project Shortcuts feature. The affected versions are before version 8.5.15, from version 8.6.0 before…

more

8.13.7, from version 8.14.0 before 8.17.1, and from version 8.18.0 before 8.18.1.

CWE(s)
CWE-1022CWE-601

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

atlassian
data center
≤ 8.5.15
atlassian
jira
≤ 8.5.15
atlassian
jira data center
8.6.0 — 8.13.7 · 8.14.0 — 8.17.1 · 8.18.0 — 8.18.1
atlassian
jira server
8.6.0 — 8.13.7 · 8.14.0 — 8.17.1 · 8.18.0 — 8.18.1

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AT-2 Literacy Training and Awareness
addresses: CWE-601

Security awareness includes verifying URLs and avoiding untrusted redirects that lead to malicious sites.

SI-10 Information Input Validation
addresses: CWE-601

Validates redirect targets and URLs to ensure they conform to allowed destinations.

References