CVE-2026-85179

High

Description

Label Studio through 1.23.0 fails to validate webhook URLs, allowing authenticated users to dispatch requests to internal services including RFC 1918 addresses and cloud metadata endpoints. Attackers can create webhooks targeting private networks and exfiltrate annotation data by enabling payload transmission in outbound requests.

SeverityHigh

CVSS8.5

Exploit probability—

ProductHumansignal Label-studio

PublishedSep 3, 2026

First seenSep 3, 2026

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

How to fix

Patches

github.com/HumanSignal/label-studio/commit/2c1c1d6472153032af8ed399168f814bea854e3e

Affected products

Product	Affected versions	Fixed in
HumanSignal label-studio	v ≤ 1.23.0	—

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