What is CVE-2019-20901?

CVE-2019-20901 is a medium-severity vulnerability in Atlassian Jira, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-07-13.

How severe is CVE-2019-20901?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Atlassian Jira

CVE-2019-20901

The login.jsp resource in Jira before version 8.5.2, and from version 8.6.0 before version 8.6.1 allows remote attackers to redirect users to a different website which they may use as part of performing a phishing attack via an open redirect in the os_destination parameter.

Vulnerability class: Open Redirect

Published 2020-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% 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
Atlassian Jira Server — versions unspecified, 8.6.0, unspecified
Atlassian Jira Server — versions 8.6.0

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

jira.atlassian.com/browse/JRASERVER-70408 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2019-20901?: CVE-2019-20901 is a medium-severity vulnerability in Atlassian Jira, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-07-13.
How severe is CVE-2019-20901?: Medium severity. CVSS v3 base score is 6.1 out of 10.