Live › vulnerability › CVE-2021-26086
Go to dashboardAtlassian Jira Server and Data Center has a path traversal flaw that lets a remote attacker read files through the /WEB-INF/web.xml endpoint. Attackers are exploiting it in the wild, according to CISA's Known Exploited Vulnerabilities catalog.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Atlassian Jira Server and Data Center | vendor | – | – |
| atlassian jira data center | vendor | < 8.5.14 | 8.5.14 |
| atlassian jira data center | vendor | >= 8.6.0, < 8.13.6 | 8.13.6 |
| atlassian jira data center | vendor | >= 8.14.0, < 8.16.1 | 8.16.1 |
| atlassian jira server | vendor | < 8.5.14 | 8.5.14 |
| atlassian jira server | vendor | >= 8.6.0, < 8.13.6 | 8.13.6 |
| atlassian jira server | vendor | >= 8.14.0, < 8.16.1 | 8.16.1 |
Unknown from the sources.
Apply the mitigation from Atlassian's vendor advisory for CVE-2021-26086, or stop using the product if no mitigation is available (per CISA required action).
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
This page as .md · .json · in your agent: get_signal("CVE-2021-26086")
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