All versions of Confluence Data Center and Server are affected by this unexploited vulnerability
Why It Matters
Analysis dossierWhy It Matters
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.
Immediate Attention
Yes
Unknown
Risk basis: CISA KEV exploitation signal; SOC ecosystem technology relevance; CRITICAL severity; Known exploitation signal from CISA KEV or ransomware metadata
Affected Products & Remediation
2 source-backed productsVendor or catalog guidance (source)
- CISA KEV: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Known exploitation (source facts)
Only what a source states. Unknown means no source has said either way; it is not "not exploited".
- CISA KEV
- Listed
- Exploited (source statement)
- Yes
- Publicly disclosed (source)
- Unknown
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Suggested hunting (rule-based inference)
SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.
Matched kev-network-exposure (CVSS AV:N, CISA KEV Listed); authorization-bypass (CWE-863)
Exposure
- Identify assets with the exact CVE and confirm the affected product/version against the advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · KEV listing raises urgency, but inventory is needed to establish local exposure. · Rule kev-network-exposure
- Locate affected authorization controls and verify deployed versions.Telemetry: Application inventory · The source must identify the affected control. · Rule authorization-bypass
Exploitation evidence
- Review relevant edge or application access logs for unusual requests around the advisory window.Telemetry: CommonSecurityLog · Log review is a hunting hypothesis; KEV listing alone does not show local exploitation. · Rule kev-network-exposure
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Exploitation evidence
- Review privileged operations performed by unexpected users on affected deployments.Telemetry: Application audit logs · Authorization anomalies can support a targeted hunt. · Rule authorization-bypass
Response
- Recheck the affected assets after the source-stated mitigation or update is applied.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies local remediation. · Rule kev-network-exposure
CISA KEV Record
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Change History & Source Data
— No recorded material change
- CNA / source
- security@atlassian.com
- Record status · verification
- UPDATED · CISA KEV confirmed
- CPE
- cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*, cpe:2.3:a:atlassian:confluence_data_center:8.6.0:*:*:*:*:*:*:*, cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*, cpe:2.3:a:atlassian:confluence_server:8.6.0:*:*:*:*:*:*:*
Evidence & Provenance
Linked by the query's stored exact CVE association. Review required tables and validation status before use.
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2023-22518"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc