DoS (Denial of Service) org.jsoup:jsoup Dependency in Jira Software Data Center

This High severity DoS Denial of Service vulnerability was introduced in versions 10.3.24 and 11.3.9 of Jira Software Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H allows an unauthenticated attacke...

DoS (Denial of Service) nanoid Dependency in Jira Software Data Center

This High severity DoS Denial of Service vulnerability was introduced in version 10.3.0 and 11.3.0 of Jira Software Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 8.2 and a CVSS Vector of CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N allows an...

Cryptographic Failure org.bouncycastle:bcprov-jdk18on, org.bouncycastle:bcprov-lts8on Dependency in Jira Software Data Center

This is a vulnerability in a non-Atlassian Jira Software Data Center dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity Cryptographic Failure vulnerability was introduced in versions 10.3.0 and 11.3.0 of Jira Software Data...

Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

Multiple Atlassian products Bitbucket Data Center ,Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible and Fisheye contain a files or directories accessible to external parties vulnerability which could allow an...

Exploit for CVE-2026-21589

CVE-2026-21589 Atlassian DC Pre-Auth Arbitrary File Read,...

CVE-2026-21589: Critical unauthenticated arbitrary file access in Atlassian products

Overview On October 5, 2026, Atlassian published a security advisory for CVE-2026-21589, a critical arbitrary file access vulnerability affecting eight products: Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crow...

Atlassian Data Center Flaw Draws Exploitation Attempts Within Two Hours of Public Details

Threat actors have begun to exploit a newly disclosed critical security flaw impacting Atlassian Data Center products that could allow access to sensitive files under certain conditions. The arbitrary file access flaw, tracked as CVE-2026-21589 CVSS score: 9.3 affects multiple products, including...

VulnCheck KEV: CVE-2026-21589

Multiple Atlassian products Bitbucket Data Center ,Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible and Fisheye contain a files or directories accessible to external parties vulnerability which could allow an...

Exploit for CVE-2026-21589

CVE-2026-21589 - Atlassian Data Center Una...

Vulnerability handling in Atlassian Data Center products

The vulnerability exists in several products within the Atlassian Data Center platform, including Jira Software, Jira Service Management, Confluence, Bitbucket, Bamboo, Crowd, Crucible, and Fisheye. The vulnerability is an Arbitrary File Access issue, allowing unauthorized attackers to access...

Critical Atlassian Flaw Lets Unauthenticated Attackers Read Known Files Across 8 Products

A critical flaw in 8 Atlassian Data Center products, which customers host themselves, allows an attacker with no login access to read specific files in each product's web application root directory. The attacker must already know a file's exact name and path and cannot list what the directory...

EUVD-2026-92807

h3. Summary This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access...

CVE-2026-21589

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific fil...

CVE-2026-21589

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific fil...

CVE-2026-21589

CVE-2026-21589 is a critical (CVSS 4.0: 9.3) pre-authentication arbitrary file read vulnerability affecting multiple Atlassian Data Center products, including Jira, Confluence, Bitbucket, Bamboo, Crowd, Crucible, and Fisheye. The root cause lies in the shared atlassian-plugins-webresource library...

CVE-2026-21589

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific fil...

CVE-2026-21589: Files or Directories Accessible to External Parties

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific fil...

Atlassian Jira Service Management Data Center and Server < 5.12.40 / 10.3.x < 10.3.26 / 11.3.x < 11.3.12 (JSDSERVER-16809)

The version of Atlassian Jira Service Management Data Center and Server Jira Service Desk running on the remote host is affected by a vulnerability as referenced in the JSDSERVER-16809 advisory. - This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Da...

Atlassian Jira < 9.12.40 / 10.3.x < 10.3.26 / 11.3.x < 11.3.12 (JRASERVER-79546)

The version of Atlassian Jira Server running on the remote host is affected by a vulnerability as referenced in the JRASERVER-79546 advisory. - h3. Summary This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center,...

PT-2026-106255

Name of the Vulnerable Software and Affected Versions Bitbucket Data Center versions 4.6.0 through 9.4.25, 10.2.7, and 10.5.0 Confluence Data Center versions 5.10.0 through 9.2.25 and 10.2.18 Crowd Data Center versions 2.11.0 through 6.3.6, 7.0.2, 7.1.6, and 7.2.3 Jira Software Data Center versio...