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CVE-2023-22527

9.8 · CRITICALActively Exploited

A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance.

Published Jan 16, 2024CWE-74EPSS 99.98%

Overview

CVE-2023-22527 is a critical-severity vulnerability. It was published on January 16, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.htmlRefconfluence.atlassian.com/pages/viewpage.action?pageId=1333335615Refjira.atlassian.com/browse/CONFSERVER-93833Refpacketstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.htmlRefconfluence.atlassian.com/pages/viewpage.action?pageId=1333335615Refjira.atlassian.com/browse/CONFSERVER-93833Refwww.vicarius.io/vsociety/posts/pwning-confluence-via-ognl-injection-for-fun-and-learning-cve-2023-22527CISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22527

How CyberStrike helps

Frequently asked questions

What is CVE-2023-22527?

CVE-2023-22527 is a critical-severity vulnerability. It was published on January 16, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2023-22527?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-22527?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-22527?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-22527 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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