CVE-2026-86480Network attack vector

Superuser access via unauthenticated trusted-service registration

Published Sep 7, 2026 · Updated Sep 9, 2026

Missing authentication in JetBrains Hub before 2026.2.52442 allows remote attackers to gain superuser privileges through service registration. The service-registration path accepts an unauthenticated request that marks the registering service as trusted and automatically assigns superuser rights. No account or user interaction is required, and successful exploitation grants full administrative control over the Hub environment.

CVSS severity9.8
Critical
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in JetBrains Hub before 2026.2.52442 allows remote attackers to gain superuser privileges through service registration. The service-registration path accepts an unauthenticated request that marks the registering service as trusted and automatically assigns superuser rights. No account or user interaction is required, and successful exploitation grants full administrative control over the Hub environment.

The record

CVE
CVE-2026-86480
Published
Sep 7, 2026
Updated
Sep 9, 2026
Vendor
JetBrains
Product
Hub
Classifications
CWE-306, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2.52442

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JetBrains · Hubversion=0 <2026.2.52442

Published CVSS scores

9.8JetBrains CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1136Create Account

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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