Security readout for executives and security teams
Plain-English summary
CVE-2021-31902 affected JetBrains YouTrack before 2020.6.6600. The issue was improper access control during issue export, which could risk unintended access to exported issue data. The provided sources do not include CVSS, detailed impact, or affected CPE records.
Executive priority
Treat this as a data-exposure validation item. Prioritize quickly if YouTrack stores sensitive customer, security, or internal engineering issues.
Technical view
The flaw is described as improper access control in YouTrack's issue-export path before version 2020.6.6600. The bundle does not specify required privileges, export formats, data fields exposed, or precise authorization bypass mechanics.
Likely exposure
Organizations are likely exposed only if they run JetBrains YouTrack before 2020.6.6600 and allow users to export issues.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not marked as CISA KEV. No public exploit details are included in the bundle.
Researcher notes
Evidence is sparse. The CVE description identifies the product, vulnerable version range, and affected function, but not exploit prerequisites, authorization boundaries, or impact scope.
Mitigation direction
- Upgrade YouTrack to 2020.6.6600 or later, based on the affected-version statement.
- Review JetBrains' security bulletin for official remediation details.
- Restrict issue export permissions until version and access controls are verified.
- Audit recent issue exports for unusual or unauthorized activity.
Validation and detection
- Inventory all YouTrack instances and record their installed versions.
- Confirm no production instance is older than 2020.6.6600.
- Review export permissions for project roles and user groups.
- Check logs or audit records for issue export activity around sensitive projects.
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-2021-31902 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://blog.jetbrains.com/CVE reference · x_refsource_MISC
- https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/CVE 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.