dbcve.org
YoutrackApplication · Jetbrains

CVE-2021-31902

HIGH · 7.5 CVSS v3.1 Published 2021-05-11
Fix available
A fix is available. Upgrade to 2020.6.6600 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In JetBrains YouTrack before 2020.6.6600, access control during the exporting of issues was implemented improperly.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

In JetBrains YouTrack before version 2020.6.6600, the access control mechanism during issue export functionality was improperly implemented, potentially allowing unauthorized users to export issues they should not have access to view or export.

MitigationUpgrade YouTrack to version 2020.6.6600 or later to address the improper access control during issue exporting.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
YoutrackApplication
Affected:< 2020.6.6600

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed YouTrack version
    Access the YouTrack administration console or check the product version from the Help > About menu in the web interface
    Affected if The version displayed is lower than 2020.6.6600
  2. Verify issue export functionality is accessible
    Confirm that the issue export feature is available in your YouTrack instance by navigating to any project and locating the export option in the issues list view
    Affected if The export functionality exists and is exposed to users
  3. Confirm user permissions configuration
    Review the access control settings for projects to determine if there are users or groups with limited visibility who might attempt to access exported issues
    Affected if Users with restricted issue visibility exist in the system and could potentially exploit the export function
  4. Check for unauthorized export attempts
    Review YouTrack audit logs or server access logs for any export actions performed by users who should not have had access to specific issues
    Affected if Export actions were performed by users without proper permissions to the exported issues

You are affected if your YouTrack installation is version 2020.6.6600 or earlier and users with limited issue permissions can export content they should not access.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 2020.6.6600 or later
Fixed in 2020.6.6600
Interim mitigation

Upgrade YouTrack to version 2020.6.6600 or later to address the improper access control during issue exporting.

Fix this in Youtrack Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-31902 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data