Label Studio through 1.23.0 SSRF via Unvalidated Webhook URL
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
Affected products
HumanSignal · label-studioReferences
https://github.com/HumanSignal/label-studiohttps://github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/webhooks/utils.pyhttps://github.com/HumanSignal/label-studio/commit/2c1c1d6472153032af8ed399168f814bea854e3ehttps://github.com/HumanSignal/label-studio/issues/9801https://www.vulncheck.com/advisories/label-studio-through-1.23.0-ssrf-via-unvalidated-webhook-url