CVE-2026-58059

This High severity DoS (Denial of Service) vulnerability known as CVE-2026-58059 was introduced in 9.12.1 and later of Jira Software Data Center and Server. This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.7 and a CVSS Vector of CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber allows an unauthenticated attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network. Atlassian recommends that Jira Software 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 Software Data Center and Server 9.12: Upgrade to a release greater than or equal to 9.12.39 * Jira Software Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11 * Jira Software Data Center 10.3: Upgrade to a release greater than or equal to 10.3.25 See the release notes ([https://www.atlassian.com/software/jira/download-archives]). You can download the latest version of Jira Software Data Center and Server from the download center ([https://www.atlassian.com/software/jira/download-archives]). The National Vulnerability Database provides the following description for this vulnerability: In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

EPSS 0.49% · 41.4th percentile