Security readout for executives and security teams
Plain-English summary
This Jira Server and Jira Data Center issue allows a remote attacker to inject HTML or JavaScript through the Export HTML Report feature. In business terms, affected Jira instances may expose users to browser-based manipulation when vulnerable report content is viewed. The source bundle provides fixed version boundaries but no CVSS score or active exploitation evidence.
Executive priority
Treat this as a timely maintenance item for self-managed Jira, especially where Jira is internet-accessible or broadly used internally. It is not supported as a crisis-level issue by the supplied evidence because no CVSS score or active exploitation signal is provided.
Technical view
CVE-2021-26083 is an XSS vulnerability in Atlassian Jira Server and Jira Data Center Export HTML Report. Affected ranges are before 8.5.14, 8.6.0 through before 8.13.6, and 8.14.0 through before 8.16.1. The bundle does not provide CWE, CVSS vector, authentication requirements, or exploit details.
Likely exposure
Exposure is limited to self-managed Atlassian Jira Server or Jira Data Center deployments in the affected version ranges. The supplied data does not identify Jira Cloud, plugins, operating systems, or specific configurations as affected.
Exploitation context
The source bundle says remote attackers can inject arbitrary HTML or JavaScript. It does not cite public exploitation, and KEV is false, so active exploitation should not be assumed from this evidence.
Researcher notes
Key unknowns are authentication requirement, exact injection point, user interaction needed, and browser execution context. Avoid assuming exploitability beyond the stated remote XSS in Export HTML Report. Use Atlassian’s issue and CVE records as the authoritative source for version triage.
Mitigation direction
- Upgrade affected Jira Server or Data Center instances to a fixed version or later.
- For 8.5.x, update to 8.5.14 or later.
- For 8.6.0-8.13.x, update to 8.13.6 or later.
- For 8.14.0-8.16.x, update to 8.16.1 or later.
- Review Atlassian JRASERVER-72213 for any vendor-specific guidance.
Validation and detection
- Inventory Jira Server and Data Center versions across production and non-production environments.
- Compare installed versions against the affected ranges listed in CVE-2021-26083.
- Confirm the Export HTML Report feature exists on in-scope instances.
- Review security logs for unusual report export or report viewing activity.
- Verify upgraded instances report a fixed version after maintenance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-26083 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.atlassian.com/browse/JRASERVER-72213CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.