CVE-2026-40175

This is a vulnerability in a non-Atlassian dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity Prototype Pollution vulnerability was introduced in versions 10.3.0 and 11.3.0 of Jira Service Management Data Center and Server. This Prototype Pollution vulnerability, with a CVSS Score of 10.0 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H allows an unauthenticated attacker to expose assets in your environment susceptible to exploitation which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Jira Service Management Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: * Jira Service Management Data Center and Server 10.3: Upgrade to a release greater than or equal to 10.3.22 * Jira Service Management Data Center and Server 11.3: Upgrade to a release greater than or equal to 11.3.7 See the release notes (https://confluence.atlassian.com/servicemanagement/jira-service-management-release-notes-780083086.html). You can download the latest version of Jira Service Management Data Center from the download center (https://www.atlassian.com/software/jira/service-management/download-archives). The National Vulnerability Database provides the following description for this vulnerability: Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This vulnerability is fixed in 1.15.0 and 0.3.1.

EPSS 0.06% · 19.9th percentile