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Atlassian disclosed a high-severity file inclusion vulnerability in Jira Software Data Center that affects versions 9.17.5 and 11.3.8. The flaw, tracked in Atlassian's advisory with a CVSS 4.0 score of 8.8, could allow an unauthenticated attacker to read local files or execute other files already present on the server, creating a significant risk for exposed Jira deployments.
Atlassian directed customers to upgrade to a fixed supported release, including Jira Software Data Center 11.3.10 or later in the 11.3 branch, or otherwise move to the latest available version. A separate Atlassian notice also states that Data Center products are scheduled to reach end of life in 2029 as the company shifts focus to cloud offerings, underscoring the need for organizations still running self-managed Jira environments to prioritize remediation and longer-term migration planning.
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Atlassian published a vulnerability notice for a high-severity Jira Software Data Center file inclusion issue with a CVSS 4.0 score of 8.8. The company advised customers to upgrade to the latest version or move to a supported fixed release, including 11.3.10 or later for the 11.3 branch.
Atlassian states a high-severity file inclusion vulnerability affecting Jira Software Data Center was introduced in versions 9.17.5 and 11.3.8. The flaw can let an unauthenticated attacker read local files or execute another file already stored on the server.
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Atlassian published security advisory `AV26-731` covering multiple vulnerabilities, including some rated **critical**, across a broad set of products used in data center, server, and desktop environments. Affected product lines named in follow-on notices include **Bamboo, Bitbucket, Confluence, Crowd, Fisheye/Crucible, Jira, Jira Service Management, and Sourcetree** for Mac and Windows, and government guidance urged administrators to review the advisories and apply vendor updates. One of the disclosed issues, `CVE-2026-21579`, is a high-severity **information disclosure** flaw in **Atlassian Confluence Data Center** with a CVSS 4.0 score of **8.2**. Atlassian said the vulnerability can be exploited remotely by an **unauthenticated** attacker to access sensitive information, affects multiple Confluence Data Center release lines, and is fixed in supported versions including **9.2.22 or later** and **10.2.14 or later**; customers were advised to upgrade to the latest or patched supported releases.
Jul 24, 2026
Atlassian and Finland’s National Cyber Security Centre warned of multiple severe vulnerabilities in Atlassian products, led by **`CVE-2022-1471`**, a critical SnakeYAML deserialization flaw rated **CVSS 9.8** that can enable remote code execution across **Bitbucket, Confluence, Jira Core, Jira Software, Jira Service Management, Automation for Jira,** and the **Confluence Cloud Migration App**. Atlassian said its hosted **`atlassian.net`** cloud sites are not affected, but Data Center and Server deployments face broad exposure and should be upgraded immediately to fixed releases. The advisories also identified product-specific RCE issues in **Confluence Data Center and Server** (**`CVE-2023-22522`**), the **Assets Discovery** app (**`CVE-2023-22523`**), and **Atlassian Companion App for macOS** (**`CVE-2023-22524`**). Authorities urged organizations to install patched versions without delay and, where patching cannot be completed at once, remove vulnerable services from the public internet; Atlassian added that there is no mitigation for some affected products, while certain Jira and Jira Service Management environments can reduce risk by upgrading the **Automation for Jira** app to a fixed version.
Jun 29, 2026
Atlassian disclosed **CVE-2019-14994**, a critical path traversal flaw in Jira Service Desk Server and Data Center that lets an authenticated user with customer portal access bypass portal restrictions and view issues across Jira Service Desk, Jira Core, and Jira Software projects on the same instance. The bug affected multiple releases before **3.9.16**, **3.16.8**, **4.1.3**, **4.2.5**, **4.3.4**, and **4.4.1**; Atlassian said Jira Service Desk Cloud and Jira Core or Jira Software deployments without Jira Service Desk were not affected. Independent analysis showed the traversal could reach administrative portal resources and expose broad issue data through search and export endpoints using JQL, making exploitation especially concerning where self-registration allowed easy portal access. Atlassian urged customers to upgrade immediately and offered temporary mitigations such as blocking requests containing `..` at a reverse proxy or load balancer, or adding redirect rules in `urlrewrite.xml`, while researcher **Sam Curry** warned that redirect-based defenses might be bypassed through alternate encodings and reported discovering the issue during an Atlassian Bug Bash.
Jun 29, 2026