CVE-2023-47115Label Studio XSS Vulnerability on Avatar Upload
- 7.1HighCVSS base score
- 1.4%Exploitation in 30 daysEPSS · top 26% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Label Studio is an a popular open source data labeling tool. Versions prior to 1.9.2 have a cross-site scripting (XSS) vulnerability that could be exploited when an authenticated user uploads a crafted image file for their avatar that gets rendered as a HTML file on the website. Executing arbitrary JavaScript could result in an attacker performing malicious actions on Label Studio users if they visit the crafted avatar image. For an example, an attacker can craft a JavaScript payload that adds a new Django Super Administrator user if a Django administrator visits the image. The file `users/functions.py` lines 18-49 show that the only verification check is that the file is an image by extracting the dimensions from the file. Label Studio serves avatar images using Django's built-in `serve` view, which is not secure for production use according to Django's documentation. The issue with the Django `serve` view is that it determines the `Content-Type` of the response by the file extension in the URL path. Therefore, an attacker can upload an image that contains malicious HTML code and name the file with a `.html` extension to be rendered as a HTML page. The only file extension validation is performed on the client-side, which can be easily bypassed. Version 1.9.2 fixes this issue. Other remediation strategies include validating the file extension on the server side, not in client-side code; removing the use of Django's `serve` view and implement a secure controller for viewing uploaded avatar images; saving file content in the database rather than on the filesystem to mitigate against other file related vulnerabilities; and avoiding trusting user controlled inputs.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Nuclei template for it. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
Nuclei templates1 template
- Label Studio - Cross-Site Scripting (Nuclei template) (opens in a new tab)
http/cves/2023/CVE-2023-47115.yamlSeverity high
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By GitHub_M
- 3 months later
· 3 months later
Published
- 16 months later
· 16 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.4% · top 26% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected < 1.9.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIlabel-studioGHSA-q68h-xwq5-mm7x (opens in a new tab)
References
References5
- https://github.com/HumanSignal/label-studio/security/advisories/GHSA-q68h-xwq5-mm7x (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/HumanSignal/label-studio/commit/a7a71e594f32ec4af8f3f800d5ccb8662e275da3 (opens in a new tab)x_refsource_MISCx_transferred
- https://docs.djangoproject.com/en/4.2/ref/views/#serving-files-in-development (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/HumanSignal/label-studio/blob/1.8.2/label_studio/users/functions.py#L18-L49 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/HumanSignal/label-studio/blob/1.8.2/label_studio/users/urls.py#L25-L26 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-0082 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-q68h-xwq5-mm7x (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-47115)Record last updated .