Security readout for executives and security teams
Plain-English summary
CVE-2019-20900 is a cross-site scripting issue in Atlassian Jira Server and Data Center. A remote attacker could inject HTML or JavaScript through the Add Field module. The sources identify versions before 8.7.0 as affected, but provide no CVSS score or confirmed exploitation evidence.
Executive priority
Prioritize remediation for internet-facing or broadly accessible Jira environments. Where Jira is internal and tightly permissioned, handle through normal vulnerability management, but do not defer indefinitely because XSS can affect privileged user sessions.
Technical view
The vulnerability is an XSS flaw in Jira's Add Field module affecting Jira Server and Data Center before 8.7.0. The available data does not define prerequisite privileges, user interaction, scope, or exact attack path. Treat internet-facing Jira administration or project configuration surfaces as higher concern until vendor details are reviewed.
Likely exposure
Organizations running Atlassian Jira Server or Data Center below 8.7.0 may be exposed. Exposure is most relevant where untrusted or lower-trust users can reach Jira workflows involving the Add Field module.
Exploitation context
The bundle does not show CISA KEV listing or other cited evidence of active exploitation. XSS impact commonly depends on who views injected content and what permissions their Jira session has, but those specifics are not provided here.
Researcher notes
Evidence is limited to the CVE description and Atlassian reference. No CVSS vector, CWE, detailed exploit conditions, or active exploitation source is included. The 8.7.0 boundary is the only version-specific remediation clue in the provided bundle.
Mitigation direction
- Inventory Jira Server and Data Center instances and record versions.
- Upgrade affected Jira instances to 8.7.0 or later where supported.
- Review Atlassian issue JRASERVER-70858 for vendor-specific guidance.
- Restrict Jira administrative and configuration access to trusted users.
- Monitor Jira for unexpected field configuration changes or suspicious scripts.
Validation and detection
- Confirm all Jira Server and Data Center versions in production.
- Check whether any instance is below version 8.7.0.
- Review access controls around field creation and configuration workflows.
- Search security logs for suspicious Jira configuration activity.
- Document remediation status and any compensating controls.
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-2019-20900 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-70858CVE 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.