CVE-2021-26086 vulnerability in Atlassian Products
Published on August 16, 2021
Under Active Exploitation
This vulnerability is under active exploitation with an EPSS score of 100.00%, meaning that exploitation is highly probable when the vulnerable component is exposed to an attacker. In addition, this vulnerability has been known to be reliably automated.Known Exploited Vulnerability
This Atlassian Jira Server and Data Center Path Traversal Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Atlassian Jira Server and Data Center contain a path traversal vulnerability that allows a remote attacker to read particular files in the /WEB-INF/web.xml endpoint.
The following remediation steps are recommended / required by December 3, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2021-26086 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2021-26086 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2021-26086
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