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CVE Record

CVE-2021-43945: Affected versions of Atlassian Jira Server and Data Center allow remote attackers with Roadmaps Administrat...

Affected versions of Atlassian Jira Server and Data Center allow remote attackers with Roadmaps Administrator permissions to inject arbitrary HTML or JavaScript via a Stored Cross-Site Scripting (SXSS) vulnerability in the /rest/jpo/1.0/hierarchyConfiguration endpoint. The affected versions are before version 8.20.3.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This issue lets a Jira user with Roadmaps Administrator permissions store malicious HTML or JavaScript through a Roadmaps configuration endpoint. The risk is narrower than unauthenticated compromise, but it can still affect users who later view impacted content. Atlassian lists Jira Server and Data Center versions before 8.20.3 as affected.

Executive priority

Treat as a targeted remediation item, not an emergency based on available evidence. Prioritize upgrade or permission reduction where Jira contains sensitive projects or administrator accounts regularly use Roadmaps.

Technical view

CVE-2021-43945 is a stored cross-site scripting vulnerability in Atlassian Jira Server and Data Center before 8.20.3. The vulnerable surface is the /rest/jpo/1.0/hierarchyConfiguration endpoint. Exploitation requires Roadmaps Administrator permissions, according to the CVE description.

Likely exposure

Organizations running Jira Server or Jira Data Center before 8.20.3 are potentially exposed, especially where Roadmaps Administrator permissions are broadly assigned. The source bundle does not identify specific fixed minor branches beyond 8.20.3.

Exploitation context

The provided sources do not indicate CISA KEV listing or active exploitation. The attacker must already have Roadmaps Administrator permissions, making this mainly an insider, compromised-account, or over-permissioned-user risk.

Researcher notes

Evidence is limited to the CVE description and Atlassian issue reference. No CVSS, CWE, exploit confirmation, or detailed patch notes are included in the source bundle. Avoid assuming broader Jira versions or products beyond Server and Data Center before 8.20.3.

Mitigation direction

  • Upgrade Jira Server or Data Center to 8.20.3 or later.
  • Review Atlassian issue JRASERVER-73069 for vendor guidance.
  • Limit Roadmaps Administrator permissions to trusted users only.
  • Review Roadmaps hierarchy configuration for unexpected HTML or JavaScript.

Validation and detection

  • Inventory Jira Server and Data Center instances and versions.
  • Confirm no production instance is running below 8.20.3.
  • Audit users and groups with Roadmaps Administrator permissions.
  • Review relevant Jira audit or access logs for hierarchy configuration changes.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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CVE-2021-43945 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AtlassianJira ServerunspecifiedListed
AtlassianJira Data CenterunspecifiedListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.