CVE-2026-121561

High

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.

SeverityHigh

CVSS7.7

Exploit probability38. percentile0.4%

ProductHumansignal Label-studio

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

HumanSignal label-studio1.23.2 or later
HumanSignal label-studio-sdk2.1.2 or later

Patches

Vendor advisories

github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5

Affected products

Product	Affected versions	Fixed in
HumanSignal label-studio	v < 1.23.2	1.23.2
HumanSignal label-studio-sdk	v < 2.1.2	2.1.2

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.