# CVE-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 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.

- Page: https://www.vulneraibility.com/cve/CVE-2023-22527
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2024-01-24; CISA due date 2024-02-14; known ransomware use
- EPSS: 99.98% (percentile 100.0)
- Public exploit code: 1 Metasploit module · 23 GitHub proofs of concept · 1 Nuclei template (first 2024-01-16)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2024-02-14)
- Weakness: CWE-74
- Published: 2024-01-16

## Affected versions

- Atlassian Confluence Data Center: affected >= 8.0.0; >= 8.1.0; >= 8.2.0; >= 8.3.0; >= 8.4.0; >= 8.5.0; >= 8.5.1; >= 8.5.2; >= 8.5.3; fixed in < 8.0.0, >= 8.5.4, >= 8.6.0, >= 8.7.1
- Atlassian Confluence Server: affected >= 8.0.0; >= 8.1.0; >= 8.2.0; >= 8.3.0; >= 8.4.0; >= 8.5.0; >= 8.5.1; >= 8.5.2; >= 8.5.3; fixed in < 8.0.0, >= 8.5.4, >= 8.6.0

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
- [other] https://jira.atlassian.com/browse/CONFSERVER-93833
- [other] http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527
- [other] https://www.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.