CVE-2023-22527
Atlassian Confluence Data Center and Server Template Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 February 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.98% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 24 January 2024 · due 14 February 2024 · used in ransomware campaigns
- Weakness
- CWE-74
- Affected
- atlassian/confluence data center · atlassian/confluence server
- Source
- security@atlassian.com
EPSS 100.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. 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
References
- http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-93833Issue Tracking, Vendor Advisory
- http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-93833Issue Tracking, Vendor Advisory
- https://www.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527Exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.