Answer in brief
CVE-2021-26086 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps atlassian/jira_data_center (generic), Atlassian/Jira Data Center (generic), atlassian/jira_server (generic), Atlassian/Jira Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps atlassian/jira_data_center (generic), Atlassian/Jira Data Center (generic), atlassian/jira_server (generic), Atlassian/Jira Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| atlassian/jira_data_centergeneric | >=0 <8.5.14 || >=8.6.0 <8.13.6 || >=8.14.0 <8.16.1 | 8.5.14, 8.13.6, 8.16.1 |
| Atlassian/Jira Data Centergeneric | >=unspecified <8.5.14 || >=8.6.0 <unspecified || >=unspecified <8.13.6 || >=8.14.0 <unspecified || >=unspecified <8.16.1 | 8.5.14, unspecified, 8.13.6, 8.16.1 |
| atlassian/jira_servergeneric | >=0 <8.5.14 || >=8.6.0 <8.13.6 || >=8.14.0 <8.16.1 | 8.5.14, 8.13.6, 8.16.1 |
| Atlassian/Jira Servergeneric | >=unspecified <8.5.14 || >=8.6.0 <unspecified || >=unspecified <8.13.6 || >=8.14.0 <unspecified || >=unspecified <8.16.1 | 8.5.14, unspecified, 8.13.6, 8.16.1 |
Published upstream
Aug 16, 2021
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 12, 2024
Evidence: source:kev:kev:kev:recordAffected 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-26086 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps atlassian/jira_data_center (generic), Atlassian/Jira Data Center (generic), atlassian/jira_server (generic), Atlassian/Jira Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps atlassian/jira_data_center (generic), Atlassian/Jira Data Center (generic), atlassian/jira_server (generic), Atlassian/Jira Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| atlassian/jira_data_centergeneric | >=0 <8.5.14 || >=8.6.0 <8.13.6 || >=8.14.0 <8.16.1 | 8.5.14, 8.13.6, 8.16.1 |
| Atlassian/Jira Data Centergeneric | >=unspecified <8.5.14 || >=8.6.0 <unspecified || >=unspecified <8.13.6 || >=8.14.0 <unspecified || >=unspecified <8.16.1 | 8.5.14, unspecified, 8.13.6, 8.16.1 |
| atlassian/jira_servergeneric | >=0 <8.5.14 || >=8.6.0 <8.13.6 || >=8.14.0 <8.16.1 | 8.5.14, 8.13.6, 8.16.1 |
| Atlassian/Jira Servergeneric | >=unspecified <8.5.14 || >=8.6.0 <unspecified || >=unspecified <8.13.6 || >=8.14.0 <unspecified || >=unspecified <8.16.1 | 8.5.14, unspecified, 8.13.6, 8.16.1 |
Published upstream
Aug 16, 2021
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 12, 2024
Evidence: source:kev:kev:kev:recordAffected 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.
Quoted source text, attributed separately from HOL analysis.