Is CVE-2021-26070 actively exploited?

No active exploitation of CVE-2021-26070 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-26070 be exploited remotely?

Yes. CVE-2021-26070 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-26070?

CVE-2021-26070 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2021-26070

CWE-287Published: March 22, 2021· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to evade behind-the-firewall protection of app-linked resources via a Broken Authentication vulnerability in the `makeRequest` gadget resource. The affected versions are before version 8.13.3, and from version 8.14.0 before 8.14.1.

NVD Source

Technical Analysis

CVE-2021-26070 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.