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Vulnerabilities

Vulnerability · CVE-2019-20100

The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF).

Published Feb 12, 2020 · catalog updated Jun 17, 2026 · The Atlassian Application Links

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2019-20100. EPSS is 1.02%. Act only if a listed version of The Atlassian Application Links is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The Atlassian Application Links).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.02%
Remediation
Version ranges on file
Affected products
cpe atlassian/jira · cpe atlassian/jira data center · cpe atlassian/jira server

The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center before version 8.7.0. An attacker could exploit this by tricking an administrative user into making malicious HTTP requests, allowing the attacker to enumerate hosts and open ports on the internal network where Jira server is present.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe atlassian/jira< 8.4.5
  • cpe atlassian/jira data center< 8.5.4
  • cpe atlassian/jira data center< 8.6.2
  • cpe atlassian/jira server< 8.6.2

How to fix CVE-2019-20100

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-20100. EPSS is 1.02%. Act only if a listed version of The Atlassian Application Links is installed.

Which versions are affected?

Compare what you have installed with atlassian/jira data center < 8.5.4; atlassian/jira data center < 8.6.2; atlassian/jira server < 8.6.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-352: Cross-Site Request Forgery (CSRF). EPSS 1.02%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Atlassian Jira security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 12, 2020 · Monitored products — critical

    Detected

    The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center be

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center be

Sources

  • CVE.orgVulnerability recordCVE-2019-20100

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2019-20100

    The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center be

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 3, 2026