CVE-2023-22518

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 100.00%
EPSS Percentile: 100.00%
CISA KEV: YES — Known Exploited Vulnerability

Description

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security@atlassian.com
Published: 31-Oct-2023 22:15
Last Modified: 17-Jun-2026 12:35
EPSS Date: 2026-10-18
CWE: CWE-863

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CISA KEV Details

Date Added: 2023-11-07
Remediation Due: 2023-11-28
Known Ransomware Campaign Use: Known
Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes: https://confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22518

Affected Products / Versions

atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 1.0 · before (exclusive) 7.19.16
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 7.20.0 · before (exclusive) 8.3.4
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 8.4.0 · before (exclusive) 8.4.4
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 8.5.0 · before (exclusive) 8.5.3
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: 8.6.0
cpe:2.3:a:atlassian:confluence_data_center:8.6.0:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 1.0 · before (exclusive) 7.19.16
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 7.20.0 · before (exclusive) 8.3.4
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 8.4.0 · before (exclusive) 8.4.4
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 8.5.0 · before (exclusive) 8.5.3
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: 8.6.0
cpe:2.3:a:atlassian:confluence_server:8.6.0:*:*:*:*:*:*:*

References

Last enrichment sync: 19-Oct-2026 12:49
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

HomeBlogConfluence to Cerber: Exploitation of CVE-2023-22518 for Ransomware Deployment Huntress Details Confluence CVE-2023-22518 Exploitation Leading to Cerber Ransomware

Malware (1)

People (3)

MITRE ATT&CK (5)

Vendors (1)

Products (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.