CVE-2019-20101

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-14 · updated 2026-06-17

Description

Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to view whitelist rules via a Broken Access Control vulnerability in the /rest/whitelist/<version>/check endpoint. The affected versions are before version 8.13.3, and from version 8.14.0 before 8.14.1.

Affected products

Atlassian Data Center: before 8.13.3; 8-14 — fixed in 8.13.3
Atlassian Jira: before 8.13.3; 8-14.0 — fixed in 8.13.3

How to fix

Upgrade to a fixed version: Atlassian Data Center 8.13.3; Atlassian Jira 8.13.3. Check the vendor advisory for mitigations.

References

https://ecosystem.atlassian.net/browse/AW-20
https://jira.atlassian.com/browse/JRASERVER-72618
https://ecosystem.atlassian.net/browse/AW-20
https://jira.atlassian.com/browse/JRASERVER-72618

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