CyberSecBulletin

Atlassian vulnerabilities

We track 55 vulnerabilities in Atlassian products across 33 products. 53 are rated high or critical, and 14 have been exploited in real attacks. The most recent was published on October 5, 2026.

55vulnerabilities
15critical
38high
14exploited
8.5average CVSS score

Latest Atlassian vulnerabilities

  • 7.5 High severity

    Atlassian Multiple Products Files or Directories Accessible to External Parties Exploited

    CVE-2026-21589AtlassianEPSS 99.7%

    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 unauthenti

  • 7.1 High severity

    Confluence Data Center: Uncontrolled Resource Consumption

    CVE-2026-21588Atlassian

    This High severity DoS (Denial of Service) vulnerability was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 7.1, all

  • 7.1 High severity

    Jira Service Management Data Center: Improper Authorization

    CVE-2026-21587Atlassian

    This High severity Improper Authorization vulnerability was introduced in version 11.3.0 of Jira Service Management Data Center. This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and

  • 7.1 High severity

    Confluence Data Center: Improper Authorization

    CVE-2026-21586Atlassian

    This High severity Improper Authorization vulnerability was introduced in versions 7.4.0, 7.13.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Improper Authorization vulnerability, with a CV

  • 8.1 High severity

    Bamboo Data Center: Improper Authorization

    CVE-2026-21584Atlassian

    This High severity Improper Authorization vulnerability was introduced in versions 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This Improper Authorization vulnerability, with a CVSS Score of 7.6, allows an authenticated attacker t

  • 8.8 High severity

    Crowd Data Center: Improper Authentication

    CVE-2026-21582Atlassian

    This High severity BASM (Broken Authentication & Session Management) vulnerability known as CVE-2026-21582 was introduced in version 7.2.1 of Crowd Data Center. This BASM (Broken Authentication & Session Management) vulnerability, with a CVSS Score of 8.8, all

  • 9.3 Critical severity

    Confluence Data Center: Improper Neutralization of Input During Web Page Generation

    CVE-2026-21580Atlassian

    This Critical severity Stored XSS, PrivEsc (Privilege Escalation), and Security Misconfiguration vulnerability was introduced in versions 7.1.1, 7.4.0, 7.13.0, 7.17.0, 7.19.0, 8.0.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10

  • 7.5 High severity

    Confluence Data Center: Exposure of Sensitive Information to an Unauthorized Actor

    CVE-2026-21579Atlassian

    This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, with a CVSS Score of 8.2, all

  • 8.0 High severity

    Sourcetree for Mac: Improper Control of Generation of Code

    CVE-2026-21575Atlassian

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.11 of Sourcetree for Mac and Sourcetree for Windows. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to execut

  • 8.8 High severity

    Bamboo Data Center: Improper Neutralization of Special Elements used in an OS Command

    CVE-2026-21571AtlassianEPSS 1.34%

    This Critical severity OS Command Injection vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 9.4 and a CVSS Ve

  • 8.8 High severity

    Bamboo Data Center: Improper Control of Generation of Code

    CVE-2026-21570Atlassian

    This High severity RCE (Remote Code Execution) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.6, allows an

  • 7.9 High severity

    Crowd Data Center: Improper Restriction of XML External Entity Reference

    CVE-2026-21569Atlassian

    This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access l

  • 7.5 High severity

    Confluence Data Center: Asymmetric Resource Consumption (Amplification)

    CVE-2025-22166Atlassian

    This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.3, allows an attacker to cause a resource to be unavailable for its intended us

  • 7.3 High severity

    Sourcetree for Mac: Improper Privilege Management

    CVE-2025-22165Atlassian

    This Medium severity ACE (Arbitrary Code Execution) vulnerability was introduced in version 4.2.8 of Sourcetree for Mac. This ACE (Arbitrary Code Execution) vulnerability, with a CVSS Score of 5.9, allows a locally authenticated attacker to execute arbitrary c

  • 8.8 High severity

    Jira Core Data Center: Improper Access Control

    CVE-2025-22157Atlassian

    This High severity PrivEsc (Privilege Escalation) vulnerability was introduced in versions: 9.12.0, 10.3.0, 10.4.0, and 10.5.0 of Jira Core Data Center and Server 5.12.0, 10.3.0, 10.4.0, and 10.5.0 of Jira Service Management Data Center and Server This PrivEsc

  • 8.2 High severity

    Confluence Data Center: Improper Neutralization of Input During Web Page Generation

    CVE-2024-21690Atlassian

    This High severity Reflected XSS and CSRF (Cross-Site Request Forgery) vulnerability was introduced in versions 7.19.0, 7.20.0, 8.0.0, 8.1.0, 8.2.0, 8.3.0, 8.4.0, 8.5.0, 8.6.0, 8.7.1, 8.8.0, and 8.9.0 of Confluence Data Center and Server. This Reflected XSS an

  • 8.0 High severity

    Bamboo Data Center: Improper Control of Generation of Code

    CVE-2024-21689AtlassianEPSS 2.65%

    This High severity RCE (Remote Code Execution) vulnerability CVE-2024-21689 was introduced in versions 9.1.0, 9.2.0, 9.3.0, 9.4.0, 9.5.0, and 9.6.0 of Bamboo Data Center and Server. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.6, allo

  • 8.1 High severity

    Bamboo Data Center: Improper Control of Filename for Include/Require Statement in PHP Program

    CVE-2024-21687Atlassian

    This High severity File Inclusion vulnerability was introduced in versions 9.0.0, 9.1.0, 9.2.0, 9.3.0, 9.4.0, 9.5.0 and 9.6.0 of Bamboo Data Center and Server. This File Inclusion vulnerability, with a CVSS Score of 8.1, allows an authenticated attacker to get

  • 8.7 High severity

    Confluence Data Center: Improper Neutralization of Input During Web Page Generation

    CVE-2024-21686Atlassian

    This High severity Stored XSS vulnerability was introduced in versions 7.13 of Confluence Data Center and Server. This Stored XSS vulnerability, with a CVSS Score of 7.3, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victim

  • 8.8 High severity

    Confluence Data Center: Improper Control of Generation of Code

    CVE-2024-21683AtlassianEPSS 88.3%

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.2, allows an authenticated attacker to execute arbitrary cod

  • 8.8 High severity

    Confluence Data Center: Improper Limitation of a Pathname to a Restricted Directory

    CVE-2024-21677Atlassian

    This High severity Path Traversal vulnerability was introduced in version 6.13.0 of Confluence Data Center. This Path Traversal vulnerability, with a CVSS Score of 8.3, allows an unauthenticated attacker to exploit an undefinable vulnerability which has high i

  • 7.2 High severity

    Assets Discovery Data Center: Improper Control of Generation of Code

    CVE-2024-21682Atlassian

    This High severity Injection vulnerability was introduced in Assets Discovery 1.0 - 6.2.0 (all versions). Assets Discovery, which can be downloaded via Atlassian Marketplace, is a network scanning tool that can be used with or without an agent with Jira Servic

  • 8.5 High severity

    Confluence Data Center: Improper Neutralization of Input During Web Page Generation

    CVE-2024-21678Atlassian

    This High severity Stored XSS vulnerability was introduced in version 2.7.0 of Confluence Data Center. This Stored XSS vulnerability, with a CVSS Score of 8.5, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser w

  • 7.8 High severity

    Sourcetree for Mac: Improper Control of Generation of Code

    CVE-2023-22514Atlassian

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.14 of Sourcetree for Mac and Sourcetree for Windows. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.8, and a CVSS Vector of: CVSS:3.0/AV:L/AC:L/P

  • 7.5 High severity

    Confluence Data Center: Uncontrolled Resource Consumption

    CVE-2023-22512AtlassianEPSS 15.1%

    This High severity DoS (Denial of Service) vulnerability was introduced in version 5.6.0 of Confluence Data Center and Server. With a CVSS Score of 7.5, this vulnerability allows an unauthenticated attacker to cause a resource to be unavailable for its intende

  • 7.5 High severity

    Confluence Data Center: Improper Control of Generation of Code

    CVE-2024-21674AtlassianEPSS 1.77%

    This High severity Remote Code Execution (RCE) vulnerability was introduced in version 7.13.0 of Confluence Data Center and Server. Remote Code Execution (RCE) vulnerability, with a CVSS Score of 8.6 and a CVSS Vector of CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:

  • 8.8 High severity

    Confluence Data Center: Improper Control of Generation of Code

    CVE-2024-21673AtlassianEPSS 1.5%

    This High severity Remote Code Execution (RCE) vulnerability was introduced in versions 7.13.0 of Confluence Data Center and Server. Remote Code Execution (RCE) vulnerability, with a CVSS Score of 8.0 and a CVSS Vector of CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I

  • 8.8 High severity

    Confluence Data Center: Improper Control of Generation of Code

    CVE-2024-21672AtlassianEPSS 1.36%

    This High severity Remote Code Execution (RCE) vulnerability was introduced in version 2.1.0 of Confluence Data Center and Server. Remote Code Execution (RCE) vulnerability, with a CVSS Score of 8.3 and a CVSS Vector of CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H

  • 9.8 Critical severity

    Atlassian Confluence Data Center and Server Template Injection Exploited

    CVE-2023-22527AtlassianEPSS 100%

    A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions

  • 8.8 High severity

    Confluence Data Center: Improper Control of Generation of Code

    CVE-2023-22526AtlassianEPSS 1.57%

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 7.19.0 of Confluence Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.2, allows an authenticated attacker to execute arbitrary code which

  • 8.8 High severity

    Confluence Data Center: Improper Neutralization of Special Elements in Output Used by a Downstream Component

    CVE-2023-22522AtlassianEPSS 12.9%

    This Template Injection vulnerability allows an authenticated attacker, including one with anonymous access, to inject unsafe user input into a Confluence page. Using this approach, an attacker is able to achieve Remote Code Execution (RCE) on an affected inst

  • 9.8 Critical severity

    Atlassian Confluence Data Center and Server Improper Authorization Exploited

    CVE-2023-22518AtlassianEPSS 100%

    All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using thi

  • 9.8 Critical severity

    Atlassian Confluence Data Center and Server Broken Access Control Exploited

    CVE-2023-22515AtlassianEPSS 99.2%

    Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence adm

  • 8.8 High severity

    Bitbucket Data Center: Improper Control of Generation of Code

    CVE-2023-22513AtlassianEPSS 15.3%

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 8.0.0 of Bitbucket Data Center and Server. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.5, allows an authenticated attacker to execute arbitrary co

  • 8.8 High severity

    Bamboo Data Center: Improper Control of Generation of Code

    CVE-2023-22506AtlassianEPSS 2.06%

    This High severity Injection and RCE (Remote Code Execution) vulnerability known as CVE-2023-22506 was introduced in version 8.0.0 of Bamboo Data Center. This Injection and RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.5, allows an authenti

  • 9.1 Critical severity

    Jira Service Management Data Center: Improper Authentication

    CVE-2023-22501AtlassianEPSS 15.5%

    An authentication vulnerability was discovered in Jira Service Management Server and Data Center which allows an attacker to impersonate another user and gain access to a Jira Service Management instance under certain circumstances_._ With write access to a Us

  • 9.8 Critical severity

    Bitbucket Data Center: Improper Neutralization of Special Elements used in a Command

    CVE-2022-43781AtlassianEPSS 98%

    There is a command injection vulnerability using environment variables in Bitbucket Server and Data Center. An attacker with permission to control their username can exploit this issue to execute arbitrary code on the system. This vulnerability can be unauthen

  • 7.5 High severity

    Confluence Data Center: Incorrect Authorization

    CVE-2022-42978AtlassianEPSS 1.03%

    In the Netic User Export add-on before 1.3.5 for Atlassian Confluence, authorization is mishandled. An unauthenticated attacker could access files on the remote system.

  • 7.5 High severity

    Confluence Data Center: Improper Limitation of a Pathname to a Restricted Directory

    CVE-2022-42977AtlassianEPSS 1.22%

    The Netic User Export add-on before 1.3.5 for Atlassian Confluence has the functionality to generate a list of users in the application, and export it. During export, the HTTP request has a fileName parameter that accepts any file on the system (e.g., an SSH p

  • 8.8 High severity

    Jira Align: Incorrect Default Permissions

    CVE-2022-36803Atlassian

    The MasterUserEdit API in Atlassian Jira Align Server before version 10.109.2 allows An authenticated attacker with the People role permission to use the MasterUserEdit API to modify any users role to Super Admin. This vulnerability was reported by Jacob Shafe