CVE-2025-47783: Humansignal Label Studio

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

Label Studio is a multi-type data labeling and annotation tool. A vulnerability in versions prior to 1.18.0 allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, session hijacking, unauthorized actions on behalf of the user, and other attacks. The vulnerability is reproducible when sending a properly formatted request to the `POST /projects/upload-example/` endpoint. In the source code, the vulnerability is located at `label_studio/projects/views.py`. Version 1.18.0 contains a patch for the issue.

Affected products

• Humansignal Label Studio: before 1.18.0 (fixed in 1.18.0)

Published 2025-05-14. Last modified 2026-06-17.