Medium severity5.3CISA KEVNVD Advisory· Published Aug 16, 2021· Updated Jun 17, 2026

CVE-2021-26086

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Atlassian/Jira Data Center
cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
Range: <8.5.14
Atlassian/Jira Server2 versions
cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*range: <8.5.14
- (no CPE)range: unspecified
Atlassian/Crowd Data Center and Serverllm-fuzzy
Range: <8.5.14, 8.6.0-<8.13.6, 8.14.0-<8.16.1
Atlassian/Jirallm-fuzzy
Range: <8.5.14, 8.6.0-<8.13.6, 8.14.0-<8.16.1
Atlassian/Jira Core Data Centercpe-rescue
Range: unspecified

Patches

Vulnerability mechanics

References

packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.htmlnvdExploitThird Party AdvisoryVDB Entry
jira.atlassian.com/browse/JRASERVER-72695nvdIssue TrackingVendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource

News mentions

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epss	0.080
exploit	0.030
kev	0.120
patch	0.000
ransomware	0.000