CVE-2023-22515

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 99.22%
EPSS Percentile: 99.94%
CISA KEV: YES — Known Exploited Vulnerability

Description

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. 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: 04-Oct-2023 21:15
Last Modified: 17-Jun-2026 12:35
EPSS Date: 2026-10-16
CWE: CWE-20

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: 2023-10-05
Remediation Due: 2023-10-13
Known Ransomware Campaign Use: Known
Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
Notes: https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22515

Affected Products / Versions

atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 8.0.0 · before (exclusive) 8.3.3
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 8.4.0 · before (exclusive) 8.4.3
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_data_center
Version / affected range: * · from (inclusive) 8.5.0 · before (exclusive) 8.5.2
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 8.0.0 · before (exclusive) 8.3.3
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 8.4.0 · before (exclusive) 8.4.3
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian / confluence_server
Version / affected range: * · from (inclusive) 8.5.0 · before (exclusive) 8.5.2
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*

References

Last enrichment sync: 17-Oct-2026 12:10
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (2)

CVE-2023-22515: Confluence Data Center and Server by Atlassian What CVEs Are and How They Help Track Security Vulnerabilities
The Ukrainian Cyber Alliance (UCA) used CVE-2023-22515, which involves Confluence, to escalate privileges and access Trigona’s confluence server. DarkOwl’s October Roundup Covers Lazarus Malware, Ransomware and Cyberattacks

CVE (4)

Malware (3)

People (3)

Threat Actors (7)

Vendors (3)

Products (8)

Tools (1)

Industries (7)

Countries (5)

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.