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HubApplication · Jetbrains

CVE-2021-43182

HIGH · 7.5 CVSS v3.1 Published 2021-11-09
Fix available
A fix is available. Upgrade to 2021.1.13415 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 Hub before 2021.1.13415, a DoS via user information is possible.

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

A Denial of Service vulnerability exists in JetBrains Hub versions prior to 2021.1.13415. The flaw is triggered via user information handling, likely due to improper resource consumption or input validation when processing user data, allowing an attacker to cause service unavailability.

MitigationUpgrade JetBrains Hub to version 2021.1.13415 or later. If immediate patching is not possible, implement rate limiting and monitoring on user information endpoints to mitigate potential exploitation.

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
HubApplication
Affected:< 2021.1.13415

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
None
Availability
High

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

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. Confirm JetBrains Hub is installed
    Locate the Hub installation directory or check for Hub processes running on the system. Common locations include /opt/hub or the installation path configured during setup.
    Affected if JetBrains Hub is not found on the system, then the CVE does not apply.
  2. Identify the installed Hub version
    Check the Hub version file in the installation directory, or review startup logs for the version string. The version is typically displayed in the admin interface under 'About' or in the version info file.
    Affected if The version cannot be determined, treat the installation as potentially vulnerable.
  3. Compare version against affected range
    Compare the installed version number to 2021.1.13415. Versions prior to 2021.1.13415 are affected (for example, 2021.1.13000, 2021.0.x, etc.).
    Affected if The installed version is less than 2021.1.13415, indicating the system is affected by this vulnerability.
  4. Verify if user information endpoints are accessible
    Confirm that the Hub web interface or API endpoints handling user information are exposed externally or accessible to untrusted users.
    Affected if User information endpoints are publicly accessible without additional protections, increasing exploitation risk.

A system is affected if JetBrains Hub is installed with a version lower than 2021.1.13415 and user information endpoints are accessible.

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.

dbcve · scoped
Upgrade available Upgrade to 2021.1.13415 or later
Fixed in 2021.1.13415
Interim mitigation

Upgrade JetBrains Hub to version 2021.1.13415 or later. If immediate patching is not possible, implement rate limiting and monitoring on user information endpoints to mitigate potential exploitation.

Recommended fix High confidence

2021.1.13415 or later (2021.1.x stable release)

  1. Check the current JetBrains Hub version running in your environment
  2. Plan the upgrade - ensure you have a backup of your Hub data and configuration
  3. Download JetBrains Hub version 2021.1.13415 or later from the official JetBrains website or your existing license portal
  4. Stop the Hub service before applying the upgrade
  5. Apply the upgrade following JetBrains Hub installation/upgrade documentation
  6. Start the Hub service after the upgrade completes
  7. Verify the Hub instance is running correctly and test that user information functionality works as expected

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Hub Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,380
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,808.

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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-2021-43182 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