Read the docs
TI-2026-17408 Aliases CVE-2026-21587GHSA-gp6h-7p69-238v

Improper authorization in Atlassian Jira Service Management Data Center

Priority LOW 34CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

This High severity Improper Authorization vulnerability was introduced in version 11.3.0 of Jira Service Management Data Center. This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code. Atlassian recommends that Jira Service Management Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: * Jira Service Management Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11 See the release notes (https://confluence.atlassian.com/servicemanagement/jira-service-management-release-notes-780083086.html). You can download the latest version of Jira Service Management Data Center from the download center (https://www.atlassian.com/software/jira/service-management/download-archives). This vulnerability was reported via our Penetration Testing program.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00445 38th percentileScored 2026-11-07
Fix Fixed Jira Service Management Data Center (Atlassian): 11.3.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AtlassianJira Service Management Data Center11.3.0 to 11.3.1011.3.11Patch availableCNA
  • Jira Service Management Data Center VendorAtlassian Affected 11.3.0 to 11.3.10 Fixed in 11.3.11 Patch available CNA

Remediation

  • Fix · CNA Jira Service Management Data Center (Atlassian) Fixed in 11.3.11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21587
  2. 2026-10-03 Alias added: GHSA-gp6h-7p69-238v

References

Other 2

  • TI-2023-08765 Injection in Atlassian Confluence Data Center KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-08757 Improper input validation in Atlassian Confluence Data Center KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09600 Hard-coded credentials in Atlassian Questions For Confluence KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09596 Expression language injection in Atlassian Confluence Data Center KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-08036 Expression language injection in Atlassian Confluence Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-08654 Injection in Atlassian Jira Server and Data Center KEVCVSS 3.1CRITICAL 9.8
See all 477 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences