CVE-2026-21589

💠 CVE-2026-21589 — Atlassian Pre-Auth Arbitrary File Access Unauthenticated Arbitrary File Access via Path Traversal Security research and technical analysis of CVE-2026-21589 affecting multiple Atlassian Data Center products. Overview CVE-2026-21589 is a critical unauthenticated arbitrary file...

CVE-2022-26134

CVE-2022-26134 On May the 30th, 2022, an organisation named Volexity identified an un-authenticated RCE vulnerability scoring 9.8 on NIST within Atlassian's Confluence Server and Data Center editions Vulnerable Version 7.18.1 Run python -m venv venv source venv/bin/activate pip install -r...

Atlassian Data Center Products Arbitrary File Access

Atlassian Bitbucket, Confluence, Jira Service Management, Jira Software, Bamboo, Crowd, Crucible, and Fisheye Data Center versions prior to the listed fixes contain an unauthenticated arbitrary file access vulnerability...

⚡ Weekly Recap: Helpdesk 0-Days, Rogue Certs, ShinyHunters Arrest, AI-Fooling Malware and More

Some meetings last longer than it took attackers to jump on a newly disclosed security flaw this week. Within hours, they were already testing it. That's not much time to read the warning, let alone do something about it. But speed is only part of the problem. A secure connection didn't always me...

Atlassian Data Center Products Arbitrary File Access

Atlassian Data Center products contain an unauthenticated arbitrary file access vulnerability. The proof of concept uses crafted resource-download paths to retrieve known web application files from Jira, Confluence, and Bitbucket instances. https://packetstorm.news/download/235088...

Atlassian Data Center Products Arbitrary File Access Mitigation

An F5 BIG-IP iRule and validation scripts mitigate and test the arbitrary file access vulnerability in affected Atlassian Data Center products. The probe sends traversal requests while discarding response bodies and reports only HTTP status and size...

CVE-2026-21589: Critical Pre-Authentication File Read Affects Atlassian Data Center Products

Atlassian has released an out-of-band security advisory for CVE-2026-21589, a critical arbitrary file access vulnerability affecting a broad range of its Data Center products. The flaw carries a CVSS 4.0 score of 9.3 and can be exploited remotely without authentication or user interaction. Becaus...

Exploit for CVE-2026-21589

CVE-2026-21589 — Nuclei Template detecção passiva Template...

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...

Atlassian Data Center Path Traversal

The vulnerability of Atlassian Data Center software lies in the use of files and directories accessible from external parties. Exploiting this vulnerability could allow a malicious actor to gain unauthorized access to protected information...

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...

RCE (Remote Code Execution) in - CVE-2022-1471

h2. Summary of Vulnerability Multiple Atlassian Data Center and Server Products use the SnakeYAML library for Java, which is susceptible to a deserialization flaw that can lead to RCE Remote Code Execution. i Atlassian Cloud sites are not affected by this vulnerability. If your site is accessed...

Exploit for Missing Authorization in Atlassian Data_Center

CVE-2020-36287 The dashboard gadgets preference resource of th...

Jira Server and Data Center affected by Tomcat CVE-2021-25329 and CVE-2021-25122

Affected versions of Atlassian Jira Server and Data Center used versions of Apache Tomcat that were vulnerable to CVE-2021-25329|https://nvd.nist.gov/vuln/detail/CVE-2021-25329 and CVE-2021-25122|https://nvd.nist.gov/vuln/detail/CVE-2021-25122. The affected versions are before version 8.17.0. ...

CVE-2019-15001

The Jira Importers Plugin in Atlassian Jira Server and Data Cente from version with 7.0.10 before 7.6.16, from 7.7.0 before 7.13.8, from 8.0.0 before 8.1.3, from 8.2.0 before 8.2.5, from 8.3.0 before 8.3.4 and from 8.4.0 before 8.4.1 allows remote attackers with Administrator permissions to gain...