CVE-2024-23633Public exploitNetwork attack vector

Stored XSS via extension-derived HTML responses

Published Jan 23, 2024 · Updated Nov 13, 2024

Stored XSS in HumanSignal Label Studio before 1.10.1 allows remote attackers to run JavaScript when a user opens an imported HTML file. data_import/uploader.py preserves the URL-derived .html filename, and data_import/api.py assigns text/html from that extension without sandboxing the response. Exploitation requires a Label Studio user to open the crafted upload; script execution inherits the site's origin and can act with that user's privileges.

CVSS severity4.7
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in HumanSignal Label Studio before 1.10.1 allows remote attackers to run JavaScript when a user opens an imported HTML file. data_import/uploader.py preserves the URL-derived .html filename, and data_import/api.py assigns text/html from that extension without sandboxing the response. Exploitation requires a Label Studio user to open the crafted upload; script execution inherits the site's origin and can act with that user's privileges.

The record

CVE
CVE-2024-23633
Published
Jan 23, 2024
Updated
Nov 13, 2024
Vendor
HumanSignal
Product
Label Studio
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.10.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HumanSignal · Label Studioversion=< 1.10.1

Published CVSS scores

4.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo