Actively exploited · Published Aug 16, 2021 · Assigned by atlassian
CVE-2021-26086
Medium 5.3 Exploited
In plain English
A medium-severity path traversal in Jira Data Center from Atlassian. Attackers are actively exploiting it in the wild (listed by CISA on November 12, 2024). The chance it is exploited in the next 30 days is estimated at 100.0% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Dec 3, 2024.
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Atlassian | Jira Server | unspecified – before 8.5.148.6.0 – before unspecifiedunspecified – before 8.13.68.14.0 – before unspecifiedunspecified – before 8.16.1 |
| Atlassian | Jira Data Center | unspecified – before 8.5.148.6.0 – before unspecifiedunspecified – before 8.13.68.14.0 – before unspecifiedunspecified – before 8.16.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N