CVE-2020-36238

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-01 · updated 2026-06-17
Weakness: CWE-863

Description

The /rest/api/1.0/render resource in Jira Server and Data Center before version 8.5.13, from version 8.6.0 before version 8.13.5, and from version 8.14.0 before version 8.15.1 allows remote anonymous attackers to determine if a username is valid or not via a missing permissions check.

Affected products

Atlassian Data Center: before 8.5.13 — fixed in 8.5.13
Atlassian Jira: before 8.5.13 — fixed in 8.5.13
Atlassian Jira: from 8.6.0 before 8.13.5; from 8.14.0 before 8.15.1 — fixed in 8.13.5, 8.15.1
Atlassian Jira: from 8.6.0 before 8.13.5; from 8.14.0 before 8.15.1 — fixed in 8.13.5, 8.15.1

How to fix

Upgrade to a fixed version: Atlassian Data Center 8.5.13; Atlassian Jira 8.5.13; Atlassian Jira 8.13.5, 8.15.1; Atlassian Jira 8.13.5, 8.15.1. Check the vendor advisory for mitigations.

References

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