Security readout for executives and security teams
Plain-English summary
CVE-2019-3403 is a Jira authorization flaw that could let remote attackers enumerate usernames through a user picker REST endpoint. This is mainly an identity exposure issue, not a confirmed system compromise path in the provided sources.
Executive priority
Treat this as a moderate priority identity exposure issue. It can help attackers discover valid users, supporting phishing or credential attacks, but the provided evidence does not show direct code execution or confirmed exploitation.
Technical view
The Jira /rest/api/2/user/picker resource had an incorrect authorization check. Affected versions are Jira before 7.13.3, 8.0.0 before 8.0.4, and 8.1.0 before 8.1.1. The weakness is mapped to CWE-863.
Likely exposure
Exposure is likely for organizations running affected Atlassian Jira versions, especially externally reachable instances. The sources do not identify affected configurations beyond the listed version ranges.
Exploitation context
The provided sources describe remote username enumeration. They do not cite active exploitation, KEV listing, public exploit use, authentication requirements, or CVSS scoring.
Researcher notes
Evidence is limited to the CVE description and Atlassian issue reference. No CVSS vector, exploit details, or detailed workaround is included in the source bundle. Avoid assuming additional affected products or exploit maturity.
Mitigation direction
- Upgrade Jira to 7.13.3, 8.0.4, 8.1.1, or later supported fixed releases.
- Check Atlassian guidance for any branch-specific remediation details.
- Limit internet exposure of Jira where business requirements allow.
- Review logs for suspicious user picker endpoint activity.
Validation and detection
- Inventory Jira versions across all environments.
- Confirm no production instance runs the affected version ranges.
- Review external accessibility of Jira REST endpoints.
- Validate remediation against Atlassian’s advisory or issue tracker.
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.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-3403 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-69242CVE 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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.