What is CVE-2017-18101?

CVE-2017-18101 is a medium-severity vulnerability in Atlassian Jira, classified under Improper Access Control. CVSS score: 6.5/10. Published 2018-04-10.

How severe is CVE-2017-18101?

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

Auth bypass in Atlassian Jira

CVE-2017-18101

Various administrative external system import resources in Atlassian JIRA Server (including JIRA Core) before version 7.6.5, from version 7.7.0 before version 7.7.3, from version 7.8.0 before version 7.8.3 and before version 7.9.0 allow remote attackers to run import operations and to determine if an internal service exists through missing permission checks.

Published 2018-04-10 · 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: 0.012 (66.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.000

Affected products

Atlassian Jira — versions unspecified, 7.7.0, 7.8.0
Atlassian Jira Server

Weakness classification (CWE)

References

www.securityfocus.com/bid/103730 (vdb-entry, Broken Link)
jira.atlassian.com/browse/JRASERVER-67107 (Vendor Advisory)

Frequently asked questions

What is CVE-2017-18101?: CVE-2017-18101 is a medium-severity vulnerability in Atlassian Jira, classified under Improper Access Control. CVSS score: 6.5/10. Published 2018-04-10.
How severe is CVE-2017-18101?: Medium severity. CVSS v3 base score is 6.5 out of 10.