Security readout for executives and security teams
CVE-2023-22527 is a critical remote code execution flaw in older Atlassian Confluence Data Center and Server. An attacker can exploit a vulnerable internet-facing instance without logging in, which can lead to full system compromise. Atlassian says affected customers must take immediate action. Highest exposure is self-managed Confluence Data Center or Server reachable from the internet or untrusted networks, especially older 8.x or pre-8.0 instances identified in the CVE data. Treat this as an immediate executive priority for any self-managed Confluence exposure. The combination of unauthenticated RCE, CVSS 10.0, and CISA KEV listing creates credible business risk of compromise and disruption. Mitigation focus: Upgrade affected Confluence Data Center and Server instances to the latest supported version Atlassian recommends.; Check Atlassian advisory and Jira issue for exact affected-version and remediation guidance.; Restrict external access to Confluence until remediation is verified..
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-74: Exact CWE lookup
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Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-22527 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
10CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615CVE reference
- https://jira.atlassian.com/browse/CONFSERVER-93833CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527CVE reference · government-resource
- https://www.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.