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TI-2023-08754 Aliases CVE-2023-22512GHSA-h33j-9q95-27j4

Uncontrolled resource consumption in Atlassian Confluence Data Center

Priority MEDIUM 55CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

This High severity DoS (Denial of Service) vulnerability was introduced in version 5.6.0 of Confluence Data Center and Server. With a CVSS Score of 7.5, this vulnerability allows an unauthenticated attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a vulnerable host (Confluence instance) connected to a network, which has no impact to confidentiality, no impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Confluence Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center and Server 7.19: Upgrade to a release greater than or equal to 7.19.14 Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.1 Confluence Data Center and Server 8.6 or above: No need to upgrade, you're already on a patched version See the release notes (https://confluence.atlassian.com/doc/confluence-release-notes-327.html ). You can download the latest version of Confluence Data Center and Server from the download center (https://www.atlassian.com/software/confluence/download-archives ]). This vulnerability was reported via our Bug Bounty program.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.15053 96th percentileScored 2026-11-07
Fix Fixed Confluence Data Center (Atlassian): < 5.6.0, >= 7.19.13, >= 7.19.14 +2Confluence Server (Atlassian): < 5.6.0, >= 7.19.13, >= 7.19.14 +2

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
AtlassianConfluence Data Center>= 5.6.0< 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0Patch availableCNA
AtlassianConfluence Server>= 5.6.0< 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0Patch availableCNA
  • Confluence Data Center VendorAtlassian Affected >= 5.6.0 Fixed in < 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0 Patch available CNA
  • Confluence Server VendorAtlassian Affected >= 5.6.0 Fixed in < 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*5.6 to before 7.19.14; 8.0.0 to before 8.5.1VulnerableAtlassian
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*5.6 to before 7.19.14; 8.0.0 to before 8.5.1VulnerableAtlassian
  • cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* Versions 5.6 to before 7.19.14; 8.0.0 to before 8.5.1 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* Versions 5.6 to before 7.19.14; 8.0.0 to before 8.5.1 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Confluence Data Center (Atlassian) Fixed in < 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0
  • Fix · CNA Confluence Server (Atlassian) Fixed in < 5.6.0, >= 7.19.13, >= 7.19.14, >= 8.5.1, >= 8.6.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-22512
  2. 2026-10-03 Alias added: GHSA-h33j-9q95-27j4

References

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-2023-08759 Incorrect authorization in Atlassian Confluence Data Center KEVCVSS 3.1CRITICAL 9.8
See all 38 →

Sources

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