Read the docs
TI-2023-08759 Aliases CVE-2023-22518GHSA-8prx-84h6-4fr5

Incorrect authorization in Atlassian Confluence Data Center

Priority CRITICAL 99Exploited in the wildCWE-863Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-863.

Summary

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability.  Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

Why it matters now

Exploitation Active In CISA KEV since 2023-11-07CISA due date 2023-11-28Known ransomware use
EPSS 0.99999 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Confluence Data Center (Atlassian): < 1.0.0, >= 7.19.16, >= 8.3.4 +3Confluence Server (Atlassian): < 1.0.0, >= 7.19.16, >= 8.3.4 +3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
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
AtlassianConfluence Data Center>= 1.0.0< 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1Patch availableCNA
AtlassianConfluence Server>= 1.0.0< 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1Patch availableCNA
  • Confluence Data Center VendorAtlassian Affected >= 1.0.0 Fixed in < 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1 Patch available CNA
  • Confluence Server VendorAtlassian Affected >= 1.0.0 Fixed in < 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*1.0 to before 7.19.16; 7.20.0 to before 8.3.4; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.3VulnerableAtlassian
cpe:2.3:a:atlassian:confluence_data_center:8.6.0:*:*:*:*:*:*:*8.6.0VulnerableAtlassian
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*1.0 to before 7.19.16; 7.20.0 to before 8.3.4; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.3VulnerableAtlassian
cpe:2.3:a:atlassian:confluence_server:8.6.0:*:*:*:*:*:*:*8.6.0VulnerableAtlassian
  • cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* Versions 1.0 to before 7.19.16; 7.20.0 to before 8.3.4; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.3 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:confluence_data_center:8.6.0:*:*:*:*:*:*:* Versions 8.6.0 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* Versions 1.0 to before 7.19.16; 7.20.0 to before 8.3.4; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.3 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:confluence_server:8.6.0:*:*:*:*:*:*:* Versions 8.6.0 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Confluence Data Center (Atlassian) Fixed in < 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1
  • Fix · CNA Confluence Server (Atlassian) Fixed in < 1.0.0, >= 7.19.16, >= 8.3.4, >= 8.4.4, >= 8.5.3, >= 8.6.1

Timeline

  1. 2023-11-07 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-22518
  3. 2026-10-03 Alias added: GHSA-8prx-84h6-4fr5

References

Exploit 1

Advisory 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-2022-09596 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-2026-67904 Arbitrary file access in Atlassian Data Center products KEVCVSS 4.0CRITICAL 9.3
  • TI-2024-14399 Code injection in Atlassian Confluence Data Center CVSS 3.1HIGH 8.8
See all 38 →

Sources

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