CVE-2026-76073Public exploitNetwork attack vectorHinoki check available

Cross-organization annotation access via unscoped queryset

Published Aug 24, 2026 · Updated Aug 24, 2026

Authorization bypass in HumanSignal Label Studio 1.23.0 and earlier allows remote authenticated users to access other organizations' annotations. AnnotationAPI in label_studio/tasks/api.py uses Annotation.objects.all() without an organization-scoped get_queryset override, so primary-key lookup crosses tenant boundaries. Any logged-in account on a multi-organization instance can enumerate sequential annotation IDs to read, modify, and delete other organizations' annotation data.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in HumanSignal Label Studio 1.23.0 and earlier allows remote authenticated users to access other organizations' annotations. AnnotationAPI in label_studio/tasks/api.py uses Annotation.objects.all() without an organization-scoped get_queryset override, so primary-key lookup crosses tenant boundaries. Any logged-in account on a multi-organization instance can enumerate sequential annotation IDs to read, modify, and delete other organizations' annotation data.

The record

CVE
CVE-2026-76073
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
HumanSignal
Product
Label Studio
Classifications
T1565.001, T1213, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 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 <=1.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HumanSignal · Label Studioversion=0 <=1.23.0

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1565.001Stored Data Manipulation
T1213Data from Information Repositories
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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