NVD security advisoryHigh
High advisory for Label Studio
CVE-2026-121561 · Reported 3 Nov 2026
Full advisory details, affected packages, severity context, and original source.
Affected technology
Label StudioAffected product
Advisory overview
Label Studio before 1.23.2 (label-studio-sdk before 2.1.2) contains a server-side request forgery vulnerability that allows authenticated users to read internal URLs through image-bearing export formats. Attackers can import tasks with data.image pointing at internal services, export as YOLO or COCO with images to read responses, and spoof Host to capture the organization owner's API token.
Related references
- https://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L299-L338
- https://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L62-L71
- https://github.com/HumanSignal/label-studio-sdk/commit/c20c899aaaa302740dacd46a47e5774bb677561f
- https://github.com/HumanSignal/label-studio/blob/1.23.1/label_studio/data_export/models.py#L160-L167
- https://github.com/HumanSignal/label-studio/commit/df96d79183156e556d91825d15fa7721f1145e1a
- https://github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5
- https://www.vulncheck.com/advisories/label-studio-before-1.23.2-ssrf-and-token-disclosure-via-image-export-downloads