SSRF in Humansignal Label-Studio
CVE-2026-85179
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/HumanSignal/label-studio (product)
- github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/webhooks/utils.py (technical-description)
- github.com/HumanSignal/label-studio/commit/2c1c1d6472153032af8ed399168f814bea85… (patch)
- github.com/HumanSignal/label-studio/issues/9801 (issue-tracking)
- www.vulncheck.com/advisories/label-studio-through-1.23.0-ssrf-via-unvalidated-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85179?
- CVE-2026-85179 is a high-severity vulnerability in Humansignal Label-Studio, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2026-09-03.
- How severe is CVE-2026-85179?
- High severity. CVSS v3 base score is 8.5 out of 10.