CVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerability

CISA Known Exploited Vulnerabilities

Name

Atlassian Confluence Data Center and Server Template Injection Vulnerability

Vendor

Atlassian

Product

Confluence Data Center and Server

Added to the catalog

2024-01-24

Due date for US federal agencies

2024-02-14

Weaknesses

CWE-74

Catalog version

2026.10.30

Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.

Required action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA marks this vulnerability as known to be used in ransomware campaigns. CISA does not say which group used it.

Links in CISA's notes

• https://confluence.atlassian.com/security/cve-2023-22527-rce-remote-code-execution-vulnerability-in-confluence-data-center-and-confluence-server-1333990257.html
• https://nvd.nist.gov/vuln/detail/CVE-2023-22527

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2024-01-16T05:15:08.290

Last modified

2026-06-17T05:35:38.480

Weaknesses

CWE-74

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.

References

• http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html (Exploit, Third Party Advisory, VDB Entry)
• https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615 (Vendor Advisory)
• https://jira.atlassian.com/browse/CONFSERVER-93833 (Issue Tracking, Vendor Advisory)
• http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html (Exploit, Third Party Advisory, VDB Entry)
• https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615 (Vendor Advisory)
• https://jira.atlassian.com/browse/CONFSERVER-93833 (Issue Tracking, Vendor Advisory)
• https://www.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527 (Exploit)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:15.686Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-22527

CVE record

Assigner

atlassian

State

PUBLISHED

Published

2024-01-16T05:00:00.692Z

Updated

2025-10-21T23:05:28.527Z

Problem types

RCE (Remote Code Execution)

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.

References

• https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
• https://jira.atlassian.com/browse/CONFSERVER-93833
• http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html

Read on 2026-11-03T02:02:40.873Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2023/22xxx/CVE-2023-22527.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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