atlassian confluence-data-center CVE-2022-26134 vulnerability in Atlassian Products
Published on June 3, 2022

In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.

Vendor Advisory NVD

Known Exploited Vulnerability

This Confluence Server and Data Center Remote Code Execution Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Versions of Confluence Server and Data Center contain a remote code execution vulnerability that allow for an unauthenticated attacker to perform arbitrary code execution.

The following remediation steps are recommended / required by June 3, 2022: Immediately block all internet traffic to and from Atlassian's Confluence Server and Data Center products until an update is available and successfully applied.

Vulnerability Analysis

CVE-2022-26134 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. It has the highest possible exploitability rating (3.9). The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

What is an EL Injection Vulnerability?

The software constructs all or part of an expression language (EL) statement in a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

CVE-2022-26134 has been classified to as an EL Injection vulnerability or weakness.

Products Associated with CVE-2022-26134

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What versions are vulnerable to CVE-2022-26134?