Atlassian Confluence Data Center and Server Template Injection Vulnerability
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.
What happened
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.
CISA lists it as exploited, added 24 Jan 2024.
Does it affect you
Names Atlassian Confluence. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
confluence.atlassian.com - Follow the vendor advisory for the fixed release and any interim mitigation.
jira.atlassian.com - Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
cisa.gov
CISA’s notes for this entry:
Affected, as published to NVD
- confluence
- Atlassian Confluence: 8.0.0 up to the fix in 8.5.4
The record
- NVD status
- Analyzed
- Published
- 16 Jan 2024, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 9.8, Critical — computed here from the vector; NVD states 9.8.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness
- CWE-74 (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 24 Jan 2024; federal remediation due 14 Feb 2024. CISA records known use in ransomware campaigns. CISA entry
- Vendor
- Atlassian · Confluence Data Center and Server (CISA)
References on the NVD record
- confluence.atlassian.com/pages/viewpage.action?pageId=1333335615Vendor Advisory
- jira.atlassian.com/browse/CONFSERVER-93833Issue TrackingVendor Advisory
- packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.htmlExploitThird Party AdvisoryVDB Entry
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527US Government Resource
- vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527Exploit
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.