CVE-2021-39121 Information disclosure in Jira Data Center

What is CVE-2021-39121?

CVE-2021-39121 is a medium-severity vulnerability in Atlassian Jira, published on 8 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Affected versions of Atlassian Jira Server and Data Center allow authenticated remote attackers to enumerate the keys of private Jira projects via an Information Disclosure vulnerability in the /rest/api/latest/projectvalidate/key endpoint. The affected versions are before version 8.5.18, from version 8.6.0 before 8.13.10, and from version 8.14.0 before 8.18.2.

Which versions are affected by CVE-2021-39121?

It affects 4 products.

Products include Atlassian Data Center, Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server.

How do I fix CVE-2021-39121?

No fix has been published for CVE-2021-39121 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-39121 being exploited?

There is no known exploitation of CVE-2021-39121 in the wild and no public exploit code.

Other vulnerabilities in Atlassian Jira

• CVE-2017-18113 Code injection in Jira Data Center High 8.8
• CVE-2021-41312 Auth bypass in Jira Data Center High 7.5
• CVE-2021-39123 Denial of service in Jira Data Center High 7.5
• CVE-2021-39113 Missing authorization in Jira Data Center High 7.5
• CVE-2021-43947 Code injection in Jira Data Center High 7.2

All Atlassian Jira vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-r34f-76fq-39vg.