Label Studio before 1.23.2 SSRF and Token Disclosure via Image Export Downloads

Summary

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.

Remediation

1. Inventory every HumanSignal label-studio deployment, including staging.
2. Upgrade HumanSignal label-studio to the fixed version for your release line, listed under Affected versions.
3. Confirm the running version after the upgrade.

References

• Patchhttps://github.com/HumanSignal/label-studio-sdk/commit/c20c899aaaa302740dacd46a47e5774bb677561f
• Patchhttps://github.com/HumanSignal/label-studio/commit/df96d79183156e556d91825d15fa7721f1145e1a
• Advisoryhttps://github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5
• Advisoryhttps://www.vulncheck.com/advisories/label-studio-before-1.23.2-ssrf-and-token-disclosure-via-image-export-downloads
• Referencehttps://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L299-L338
• Referencehttps://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L62-L71
• Referencehttps://github.com/HumanSignal/label-studio/blob/1.23.1/label_studio/data_export/models.py#L160-L167