How severe is CVE-2021-39116?

CVE-2021-39116 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-39116 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39116?

CVE-2021-39116 primarily affects Atlassian Jira Data Center. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-39116?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-39116 published?

CVE-2021-39116 was published on 2021-09-08 and last updated on 2026-06-17.

CVE-2021-39116

CVE-2021-39116 is a medium-severity vulnerability in Atlassian Jira Data Center with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atlassian Jira Data Center
Published: 2021-09-08
Last modified: 2026-06-17

Description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the GIF Image Reader component. The affected versions are before version 8.13.14, and from version 8.14.0 before 8.19.0.

Frequently asked questions

What is CVE-2021-39116?: Affected versions of Atlassian Jira Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the GIF Image Reader component. The affected versions are before version 8.13.14, and from version 8.14.0 before 8.19.0.
How severe is CVE-2021-39116?: CVE-2021-39116 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-39116 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39116?: CVE-2021-39116 primarily affects Atlassian Jira Data Center. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-39116?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-39116 published?: CVE-2021-39116 was published on 2021-09-08 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/JRASERVER-72738

Affected products (2)

cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*

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