label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HumanSignal | label-studio | before 1.18.0 | 1.18.0 | Patch available | CNA |
| — | label-studio (PyPI) | before 1.18.0 | 1.18.0 | Patch available | GHSA-8jhr-wpcm-hh4h |
- label-studio VendorHumanSignal Affected before 1.18.0 Fixed in 1.18.0 Patch available CNA
- label-studio (PyPI) Vendor— Affected before 1.18.0 Fixed in 1.18.0 Patch available GHSA-8jhr-wpcm-hh4h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:humansignal:label_studio:*:*:*:*:*:*:*:* | before 1.18.0 | Vulnerable | HumanSignal |
- cpe:2.3:a:humansignal:label_studio:*:*:*:*:*:*:*:* Versions before 1.18.0 Vulnerable ·HumanSignal
Remediation
- Fix · CNA label-studio (HumanSignal) Fixed in 1.18.0
- Fix · GHSA-8jhr-wpcm-hh4h label-studio (PyPI) Fixed in 1.18.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-47783
- 2026-10-03 Alias added: GHSA-8jhr-wpcm-hh4h
References
More HumanSignal Label Studio vulnerabilities
- TI-2023-23482 Label Studio has Hardcoded Django `SECRET_KEY` that can be Abused to Forge Session Tokens CVSS 3.1CRITICAL 9.8
- TI-2025-18951 Label Studio allows Server-Side Request Forgery in the S3 Storage Endpoint CVSS 3.1HIGH 8.6
- TI-2023-25457 Object Relational Mapper Leak Vulnerability in Filtering Task in Label Studio CVSS 3.1HIGH 7.5
- TI-2026-17727 Label Studio vulnerable to full account takeover by chaining Stored XSS + IDOR in User Profile via custom_hotkeys field CVSS 4.0HIGH 8.6
- TI-2023-25455 Label Studio XSS Vulnerability on Avatar Upload CVSS 3.1HIGH 7.1
- TI-2025-18950 Label Studio allows Cross-Site Scripting (XSS) via GET request to `/projects/upload-example` endpoint CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-47783 · CVE Program
- CVE-2025-47783 · NVD
- FIRST EPSS
- GHSA-8jhr-wpcm-hh4h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences