CVE-2021-26083 : Security Advisory and Response
Learn about CVE-2021-26083 affecting Atlassian Jira Server and Jira Data Center versions before specific releases, enabling XSS attacks. Find mitigation steps and best practices.
A Cross-Site Scripting (XSS) vulnerability in Atlassian Jira Server and Jira Data Center before certain versions allows remote attackers to inject arbitrary HTML or JavaScript. Learn more about the impact, technical details, and mitigation steps below.
Understanding CVE-2021-26083
This CVE identifies a security flaw in Atlassian Jira Server and Jira Data Center that could be exploited by attackers to execute XSS attacks.
What is CVE-2021-26083?
The vulnerability in Atlassian Jira Server and Jira Data Center versions prior to specific releases allows malicious actors to inject arbitrary HTML or JavaScript through XSS.
The Impact of CVE-2021-26083
The impact of this CVE is significant as it enables remote attackers to insert malicious code into HTML reports, potentially leading to unauthorized data access or account compromise.
Technical Details of CVE-2021-26083
Discover more about the specifics of the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability lies in the Export HTML Report feature of Atlassian Jira Server and Jira Data Center, enabling attackers to execute XSS attacks through the injection of malicious HTML or JavaScript code.
Affected Systems and Versions
Atlassian Jira Server and Jira Data Center versions before 8.5.14, from 8.6.0 to 8.13.6, and from 8.14.0 to 8.16.1 are affected by this security issue.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by injecting malicious code into HTML reports, taking advantage of the XSS weakness in the affected Jira versions.
Mitigation and Prevention
Explore the immediate steps to secure your systems and the best practices for long-term security.
Immediate Steps to Take
To mitigate the risk associated with CVE-2021-26083, users are advised to update their Atlassian Jira Server and Jira Data Center installations to versions that include security patches addressing the XSS vulnerability.
Long-Term Security Practices
In addition to applying patches, organizations should implement security measures such as input validation, output encoding, and regular security assessments to prevent XSS attacks.
Patching and Updates
Regularly monitor Atlassian's security advisories and update your Jira Server and Jira Data Center installations promptly to ensure protection against known vulnerabilities.