CVE-2026-43512

*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 BASM (Broken Authentication & Session Management) vulnerability was introduced in versions 9.12.1, 9.16.0, 9.17.0, 10.0.1, 10.1.1, 10.2.0, 10.3.0, 10.4.0, 10.5.0, 10.6.0, 10.7.1, 11.0.0, 11.1.0, 11.2.0, 11.3.0 of Jira Software Data Center. This BASM (Broken Authentication & Session Management) vulnerability, with a CVSS Score of 9.8 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H allows an unauthenticated attacker to perform actions as another user which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Jira Software Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Jira Software Data Center 9.12: Upgrade to a release greater than or equal to 9.12.36 Jira Software Data Center 11.3: Upgrade to a release greater than or equal to 11.3.7 Jira Software Data Center 10.3: Upgrade to a release greater than or equal to 10.3.22 See the release notes ([https://www.atlassian.com/software/jira/download-archives]). You can download the latest version of Jira Software Data Center from the download center ([https://www.atlassian.com/software/jira/download-archives]). The National Vulnerability Database provides the following description for this vulnerability: DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

EPSS 0.14% · 33.7th percentile