What’s Vulnerable › Vulnerabilities

CVE-2020-14183

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-06 · updated 2026-06-17
• Weakness: CWE-200

Description

Affected versions of Jira Server & Data Center allow a remote attacker with limited (non-admin) privileges to view a Jira instance's Support Entitlement Number (SEN) via an Information Disclosure vulnerability in the HTTP Response headers. The affected versions are before version 7.13.18, from version 8.0.0 before 8.5.9, and from version 8.6.0 before 8.12.1.

Affected products

• Atlassian Jira: before 7.13.18; from 8.0.0 before 8.5.9; from 8.6.0 before 8.12.1 — fixed in 7.13.18, 8.12.1, 8.5.9

How to fix

Upgrade to a fixed version: Atlassian Jira 7.13.18, 8.12.1, 8.5.9. Check the vendor advisory for mitigations.

References

• https://jira.atlassian.com/browse/JRASERVER-71646
• https://jira.atlassian.com/browse/JRASERVER-71646

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