CVE-2026-85179Network attack vectorHinoki check available

Authenticated SSRF via unvalidated webhook destinations

Published Sep 3, 2026 · Updated Sep 3, 2026

SSRF in HumanSignal Label Studio 1.23.0 and earlier allows remote authenticated users to reach internal services through webhook URLs. The webhook creation path accepts a caller-controlled destination without rejecting RFC 1918 or link-local metadata addresses, then dispatches event payloads to that destination. An account able to create webhooks can probe private services and exfiltrate annotation data when payload transmission is enabled.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in HumanSignal Label Studio 1.23.0 and earlier allows remote authenticated users to reach internal services through webhook URLs. The webhook creation path accepts a caller-controlled destination without rejecting RFC 1918 or link-local metadata addresses, then dispatches event payloads to that destination. An account able to create webhooks can probe private services and exfiltrate annotation data when payload transmission is enabled.

The record

CVE
CVE-2026-85179
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
HumanSignal
Product
Label Studio
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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 exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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