Is CVE-2021-26079 actively exploited?

No active exploitation of CVE-2021-26079 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-26079 be exploited remotely?

Yes. CVE-2021-26079 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-26079?

CVE-2021-26079 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2021-26079

MEDIUM

CVE-2021-26079

CWE-79Published: June 7, 2021· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

The CardLayoutConfigTable component in Jira Server and Jira Data Center before version 8.5.15, and from version 8.6.0 before version 8.13.7, and from version 8.14.0 before 8.17.0 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability.

NVD Source

Technical Analysis

CVE-2021-26079 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.