Vulnerability · CVE-2023-22527

Atlassian Confluence Data Center and Server Template Injection Vulnerability

Published Jan 15, 2024 · corrected/updated Jun 16, 2026 · Atlassian Confluence Server and Data Center · evidence confidence very high

A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2023-22527 is a critical public vulnerability record for Atlassian Confluence Server and Data Center. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Atlassian Confluence Server and Data Center is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: atlassian/confluence data center; atlassian/confluence data center (8.7.0); atlassian/confluence server; Atlassian Confluence Data Center and Server. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 9.8, EPSS 100.0%. CISA lists it as known exploited. Weakness classes: CWE-74. Sources contributing to this record: cisa_kev, cve_org, epss, metasploit. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

Exploitation evidence
Confirmed in CISA KEV since Jan 19, 2024. Listed in CISA KEV and VulnCheck KEV.
Patch and remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Feb 14, 2024.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

Jan 15, 2024 · Catalog
Detected
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. H
Jan 24, 2024 · CISA KEV
Known exploited
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Feb 14, 2024 · CISA KEV
Remediation due
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jun 16, 2026 · Catalog
Updated
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. H

Affected

cpe atlassian/confluence data centerversion unspecified
cpe atlassian/confluence data center8.7.0
cpe atlassian/confluence serverversion unspecified
vendor Atlassian Confluence Data Center and Serverversion unspecified
vendor Atlassian Confluence Server and Data Centerversion unspecified

Sources

CISA KEVConfirmed exploitationCVE-2023-22527
Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.
cisa.gov
CVE.orgVulnerability recordCVE-2023-22527
Official CVE identifier
cve.org
FIRST EPSSExploitation probabilityCVE-2023-22527
30-day exploitation probability 100.0%
first.org
Metasploit ModulesPublic exploit moduleexploit_multi/http/atlassian_confluence_rce_cve_2023_22527
Public module reference (excellent). Module source is not copied into this catalog.
rapid7.com
NIST NVDVulnerability recordCVE-2023-22527
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data
nvd.nist.gov
Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html
Packet Storm link already published on the finding.
packetstormsecurity.com
VulnCheck KEVConfirmed exploitationCVE-2023-22527
Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.
vulncheck.com