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5.3
CVSS
Medium

CVE-2021-26086

PUBLISHED

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in...

Exploited in the wild Remote Low complexity No user interaction
Vendor
Atlassian
Product
Jira Server, Jira Data Center
Published
Aug 16, 2021
EPSS
—

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.

cisa nuclei_scanner nessus_scanner

CVSS scores

CVSS v3.1 5.3 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0 5.0

AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitation status

Exploited in the wild

Recorded 2024-11-12 00:00:00 UTC · Source

SSVC decision points

Exploitation
active
Automatable
Yes
Technical impact
partial

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source Added
CISA Nov 12, 2024

Scanner integrations

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26086.yaml Apr 25, 2025
Nessus https://www.tenable.com/plugins/nessus/187096 Dec 20, 2023

Potential proof of concepts

These PoCs are unverified and could contain malware. Use at your own risk.

ColdFusionX/CVE-2021-26086

github · Created 2021-10-05 14:09:52 UTC · 23 stars

Atlassian Jira Server/Data Center 8.4.0 - Arbitrary File read (CVE-2021-26086)

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Detected by Nessus

  • Added to KEVIntel

  • Detected by Nuclei