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TI-2021-18140 Aliases CVE-2021-41311GHSA-7fxq-g996-6g8m

Improper authentication in Atlassian Jira Server

Priority MEDIUM 40CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.

Summary

Affected versions of Atlassian Jira Server and Data Center allow attackers with access to an administrator account that has had its access revoked to modify projects' Users & Roles settings, via a Broken Authentication vulnerability in the /plugins/servlet/project-config/PROJECT/roles endpoint. The affected versions are before version 8.19.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00864 58th percentileScored 2026-11-07
Fix Fixed Jira Server (Atlassian): 8.19.1Jira Data Center (Atlassian): 8.19.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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 Serverbefore 8.19.18.19.1Patch availableCNA
AtlassianJira Data Centerbefore 8.19.18.19.1Patch availableCNA
  • Jira Server VendorAtlassian Affected before 8.19.1 Fixed in 8.19.1 Patch available CNA
  • Jira Data Center VendorAtlassian Affected before 8.19.1 Fixed in 8.19.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:*before 8.19.1VulnerableAtlassian
  • cpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Jira Server (Atlassian) Fixed in 8.19.1
  • Fix · CNA Jira Data Center (Atlassian) Fixed in 8.19.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Atlassian Jira Data Center, Jira Server 8.19.1

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-18138 Improper authentication in Atlassian Jira ServerPriority LOW 32
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41311
  2. 2026-10-03 Alias added: GHSA-7fxq-g996-6g8m

References

Advisory 1

  • TI-2020-11099 Deserialization of untrusted data in Atlassian Jira Server CVSS 3.1CRITICAL 9.8
  • TI-2019-14643 Injection in Atlassian Jira Server CVSS 3.1CRITICAL 9.8
  • TI-2021-18136 Authorization bypass in Atlassian Jira Server CVSS 3.1HIGH 7.5
  • TI-2021-18135 Authorization bypass in Atlassian Jira Server CVSS 3.1HIGH 7.5
  • TI-2021-18134 Authorization bypass in Atlassian Jira Server CVSS 3.1HIGH 7.5
  • TI-2020-11104 Affected versions of Atlassian Jira Server and Data Center allow remote attackers to… CVSS 3.1HIGH 7.5
See all 38 →

Sources

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