CVE-2023-47116Public exploitNetwork attack vector

Internal server access via redirect-following URL import

Published Jan 31, 2024 · Updated Jun 17, 2025

SSRF in HumanSignal Label Studio before 1.11.0 allows remote attackers to read responses from internal web servers through URL imports. The tasks_from_url function validates only the URL's first DNS result, then requests it with redirects enabled without rechecking the destination address. Exposure requires a reachable import interface; successful requests disclose internal HTTP response data.

CVSS severity5.3
Medium
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in HumanSignal Label Studio before 1.11.0 allows remote attackers to read responses from internal web servers through URL imports. The tasks_from_url function validates only the URL's first DNS result, then requests it with redirects enabled without rechecking the destination address. Exposure requires a reachable import interface; successful requests disclose internal HTTP response data.

The record

CVE
CVE-2023-47116
Published
Jan 31, 2024
Updated
Jun 17, 2025
Vendor
HumanSignal
Product
Label Studio
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record 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=< 1.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HumanSignal · Label Studioversion=< 1.11.0

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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