What’s Vulnerable › Vulnerabilities

CVE-2021-43953

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-15 · updated 2026-06-17
• Weakness: CWE-352

Description

Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to toggle the Thread Contention and CPU monitoring settings via a Cross-Site Request Forgery (CSRF) vulnerability in the /secure/admin/ViewInstrumentation.jspa endpoint. The affected versions are before version 8.13.16, and from version 8.14.0 before 8.20.5.

Affected products

• Atlassian Data Center: before 8.13.16; from 8.14.0 before 8.20.5 — fixed in 8.13.16, 8.20.5
• Atlassian Jira: before 8.13.16; from 8.14.0 before 8.20.5 — fixed in 8.13.16, 8.20.5

How to fix

Upgrade to a fixed version: Atlassian Data Center 8.13.16, 8.20.5; Atlassian Jira 8.13.16, 8.20.5. Check the vendor advisory for mitigations.

References

• https://jira.atlassian.com/browse/JRASERVER-73170
• https://jira.atlassian.com/browse/JRASERVER-73170

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