What is CVE-2019-8451?

CVE-2019-8451 is a medium-severity vulnerability in Atlassian Jira, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2019-09-11.

How severe is CVE-2019-8451?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2019-8451 known to be exploited?

62 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Atlassian Jira

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2019-09-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.945 (99.9th percentile), scored 2026-10-19.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.945 · newest: 0.945 · change: 0.000

Affected products

Atlassian Jira — versions unspecified
Atlassian Jira Server

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

jira.atlassian.com/browse/JRASERVER-69793 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2019-8451?: CVE-2019-8451 is a medium-severity vulnerability in Atlassian Jira, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2019-09-11.
How severe is CVE-2019-8451?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2019-8451 known to be exploited?: 62 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.