CVE-2026-121561

High CVSS 7.7

Published 2026-11-03 · last changed 2026-11-03

The fix

We hold no Microsoft remediation data for CVE-2026-121561, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

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.

Sources

NVD record for CVE-2026-121561

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N