How severe is CVE-2021-43959?

CVE-2021-43959 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-43959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43959?

CVE-2021-43959 primarily affects Atlassian Jira Service Desk. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-43959?

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

When was CVE-2021-43959 published?

CVE-2021-43959 was published on 2022-07-26 and last updated on 2026-06-17.

CVE-2021-43959

CVE-2021-43959 is a medium-severity vulnerability in Atlassian Jira Service Desk with a CVSS 3.x base score of 5.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Atlassian Jira Service Desk
Published: 2022-07-26
Last modified: 2026-06-17

Description

Affected versions of Atlassian Jira Service Management Server and Data Center allow authenticated remote attackers to access the content of internal network resources via a Server-Side Request Forgery (SSRF) vulnerability in the CSV importing feature of JSM Insight. When running in an environment like Amazon EC2, this flaw may be used to access to a metadata resource that provides access credentials and other potentially confidential information. The affected versions are before version 4.13.20, from version 4.14.0 before 4.20.8, and from version 4.21.0 before 4.22.2.

Frequently asked questions

What is CVE-2021-43959?: Affected versions of Atlassian Jira Service Management Server and Data Center allow authenticated remote attackers to access the content of internal network resources via a Server-Side Request Forgery (SSRF) vulnerability in the CSV importing feature of JSM Insight. When running in an environment like Amazon EC2, this flaw may be used to access to a metadata resource that provides access credentials and other potentially confidential information. The affected versions are before version 4.13.20, from version 4.14.0 before 4.20.8, and from version 4.21.0 before 4.22.2.
How severe is CVE-2021-43959?: CVE-2021-43959 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-43959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43959?: CVE-2021-43959 primarily affects Atlassian Jira Service Desk. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-43959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-43959 published?: CVE-2021-43959 was published on 2022-07-26 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/JSDSERVER-11898

Affected products (4)

cpe:2.3:a:atlassian:jira_service_desk:*:*:*:*:data_center:*:*:*
cpe:2.3:a:atlassian:jira_service_desk:*:*:*:*:server:*:*:*
cpe:2.3:a:atlassian:jira_service_management:*:*:*:*:data_center:*:*:*
cpe:2.3:a:atlassian:jira_service_management:*:*:*:*:server:*:*:*

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