High severity7.7NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121561
CVE-2026-121561
Description
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.
Affected products
2- Range: <1.23.2
- Range: <2.1.2
Patches
Vulnerability mechanics
References
7- github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.pynvd
- github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.pynvd
- github.com/HumanSignal/label-studio-sdk/commit/c20c899aaaa302740dacd46a47e5774bb677561fnvd
- github.com/HumanSignal/label-studio/blob/1.23.1/label_studio/data_export/models.pynvd
- github.com/HumanSignal/label-studio/commit/df96d79183156e556d91825d15fa7721f1145e1anvd
- github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5nvd
- www.vulncheck.com/advisories/label-studio-before-1.23.2-ssrf-and-token-disclosure-via-image-export-downloadsnvd
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