How severe is CVE-2019-8451?

CVE-2019-8451 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-8451 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 94% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8451?

CVE-2019-8451 affects Atlassian Jira Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-8451?

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

When was CVE-2019-8451 published?

CVE-2019-8451 was published on 2019-09-11 and last updated on 2026-06-17.

CVE-2019-8451

CVE-2019-8451 is a medium-severity vulnerability in Atlassian Jira Server with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 94% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.4
EPSS exploit prediction: 94% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Atlassian Jira Server
Published: 2019-09-11
Last modified: 2026-06-17

Description

The /plugins/servlet/gadgets/makeRequest resource in Jira before version 8.4.0 allows remote attackers to access the content of internal network resources via a Server Side Request Forgery (SSRF) vulnerability due to a logic bug in the JiraWhitelist class.

Frequently asked questions

What is CVE-2019-8451?: The /plugins/servlet/gadgets/makeRequest resource in Jira before version 8.4.0 allows remote attackers to access the content of internal network resources via a Server Side Request Forgery (SSRF) vulnerability due to a logic bug in the JiraWhitelist class.
How severe is CVE-2019-8451?: CVE-2019-8451 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-8451 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 94% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8451?: CVE-2019-8451 affects Atlassian Jira Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-8451?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-8451 published?: CVE-2019-8451 was published on 2019-09-11 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/JRASERVER-69793

Affected products (1)

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

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