# CVE-2024-26152: Label Studio vulnerable to Cross-site Scripting if `` or `` are used in labeling config > Attackers can inject malicious scripts via uploaded data in Label Studio, potentially stealing cookies or executing code in victim browsers. - **Severity:** Medium 4.7 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 22 Feb 2024 - **Updated:** 14 Aug 2024 - **Also known as:** GHSA-6xv9-957j-qfhg, PYSEC-2024-249 ## What is CVE-2024-26152? CVE-2024-26152 is a medium-severity cross-site scripting vulnerability in HumanSignal label-studio, published on 22 Feb 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official description ### Summary On all Label Studio versions prior to 1.11.0, data imported via file upload feature is not properly sanitized prior to being rendered within a [`Choices`](https://labelstud.io/tags/choices) or [`Labels`](https://labelstud.io/tags/labels) tag, resulting in an XSS vulnerability. ### Details Need permission to use the "data import" function. This was reproduced on Label Studio 1.10.1. ### PoC 1. Create a project. ![Create a project](https://github.com/HumanSignal/label-studio/assets/3943358/9b1536ad-feac-4238-a1bd-ca9b1b798673) 2. Upload a file containing the payload using the "Upload Files" function. ![2 Upload a file containing the payload using the Upload Files function](https://github.com/HumanSignal/label-studio/assets/3943358/26bb7af1-1cd2-408f-9adf-61e31a5b7328) ![3 complete](https://github.com/HumanSignal/label-studio/assets/3943358/f2f62774-1fa6-4456-9e6f-8fa1ca0a2d2e) The following are the contents of the files used in the PoC ``` { "data": { "prompt": "labelstudio universe image", "images": [ { "value": "id123#0", "style": "margin: 5px", "html": "" } ] } } ``` 3. Select the text-to-image generation labeling template of Ranking and scoring ![3 Select the text-to-image generation labelling template for Ranking and scoring](https://github.com/HumanSignal/label-studio/assets/3943358/f227f49c-a718-4738-bc2a-807da4f97155) ![5 save](https://github.com/HumanSignal/label-studio/assets/3943358/9b529f8a-8e99-4bb0-bdf6-bb7a95c9b75d) 4. Select a task ![4 Select a task](https://github.com/HumanSignal/label-studio/assets/3943358/71856b7a-2b1f-44ea-99ab-fc48bc20caa7) 5. Check that the script is running ![5 Check that the script is running](https://github.com/HumanSignal/label-studio/assets/3943358/e396ae7b-a591-4db7-afe9-5bab30b48cb9) ### Impact Malicious scripts can be injected into the code, and when linked with vulnerabilities such as CSRF, it can cause even greater damage. In particular, It can become a source of further attacks, especially when linked to social engineering. Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation) ## Which versions are affected by CVE-2024-26152? 3 open source packages ship an affected version, including label-studio. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `label-studio` | PyPI | All versions | 1.11.0 | | `label-studio` | PyPI | All versions | 1.11.0 | | `label-studio` | PyPI | All versions | 1.11.0 | Products: Humansignal Label Studio. ## How do I fix CVE-2024-26152? Upgrade label-studio to 1.11.0 or later. ## Is CVE-2024-26152 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-26152 exists. ## Other vulnerabilities in HumanSignal label-studio - [CVE-2023-43791](https://insights.sbomify.com/CVE-2023-43791/): Label Studio has Hardcoded Django `SECRET_KEY` that can be Abused to Forge Session Tokens (critical 9.8) - [CVE-2026-22033](https://insights.sbomify.com/CVE-2026-22033/): Label Studio vulnerable to full account takeover by chaining Stored XSS + IDOR in User Profile via custom_hotkeys field (high 8.6) - [CVE-2025-25297](https://insights.sbomify.com/CVE-2025-25297/): Label Studio allows Server-Side Request Forgery in the S3 Storage Endpoint (high 8.6) - [CVE-2025-47783](https://insights.sbomify.com/CVE-2025-47783/): label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter. (high 7.6) - [CVE-2023-47117](https://insights.sbomify.com/CVE-2023-47117/): Object Relational Mapper Leak Vulnerability in Filtering Task in Label Studio (high 7.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2024-26152 and fix it if it is affected. What it is: CVE-2024-26152 is a medium-severity cross-site scripting vulnerability in HumanSignal label-studio, published on 22 Feb 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-26152 exists. Affected packages and fixed versions: - label-studio (PyPI): affected all versions; fixed in 1.11.0 - label-studio (PyPI): affected all versions; fixed in 1.11.0 - label-studio (PyPI): affected all versions; fixed in 1.11.0 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2024-26152/ (Markdown: https://insights.sbomify.com/CVE-2024-26152/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2024-26152 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-26152 - OSV: https://osv.dev/vulnerability/CVE-2024-26152 --- From sbomify Insights: https://insights.sbomify.com/CVE-2024-26152/ Summaries are generated and may contain mistakes; the official description above is the record.