EUVD-2026-70483
GHSA-93hf-p7mp-qw5g
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible webhook API, low complexity; PR:L for required authenticated session; S:C and C:H reflect reachable internal services and cloud metadata.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Server-side request forgery in Label Studio through 1.23.0 allows authenticated users to route outbound webhook requests to RFC 1918 private addresses and cloud instance metadata endpoints (e.g., 169.254.169.254), bypassing network segmentation controls. By creating a webhook that targets an internal service and enabling payload transmission, an attacker can probe internal infrastructure topology and exfiltrate annotation data to attacker-controlled destinations in the same operation. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session in Label Studio with sufficient permissions to create or modify webhooks - typically available to any user role that can manage projects. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N, score 8.4) correctly identifies the key risk factors: low-privilege authenticated access is sufficient, no complexity or attack requirements apply, and the subsequent-system confidentiality is rated High - reflecting the ability to reach cloud metadata services or internal APIs that may expose IAM credentials or sensitive service data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Label Studio to a version incorporating commit 2c1c1d6472153032af8ed399168f814bea854e3e (https://github.com/HumanSignal/label-studio/commit/2c1c1d6472153032af8ed399168f814bea854e3e); a specific tagged release version is not confirmed in the available data - verify with HumanSignal's release notes before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Label Studio deployments running version 1.23.0 or earlier and audit access logs for suspicious webhook creation or payload transmission activity. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Label Studio
View allLabel Studio is an open source data labeling tool. Rated medium severity (CVSS 6.1), this vulnerability is remotely expl
Label Studio is a multi-type data labeling and annotation tool with standardized output format. Rated high severity (CVS
Label Studio is an open source data labeling tool. Rated high severity (CVSS 8.6), this vulnerability is remotely exploi
Label Studio is a multi-type data labeling and annotation tool. Rated high severity (CVSS 7.6), this vulnerability is re
A Server Side Request Forgery (SSRF) in the Data Import module in Heartex - Label Studio Community Edition versions 1.5.
Label Studio is an open source data labeling tool. Rated high severity (CVSS 7.5), this vulnerability is remotely exploi
### Summary On all Label Studio versions prior to 1.11.0, data imported via file upload feature is not properly sanitize
Stored XSS in Label Studio's custom_hotkeys feature allows authenticated attackers to inject malicious JavaScript that e
Cross-organization IDOR in Label Studio allows any authenticated user on a shared instance to read, modify, and delete a
Cross-tenant cloud storage object access in Label Studio through 1.23.0 allows an authenticated low-privilege user to re
Server-side request forgery in HumanSignal Label Studio through 1.24.0.dev0 allows authenticated users to direct the ser
Label Studio, an open source data labeling tool had a remote import feature allowed users to import data from a remote w
Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
View allShare
External POC / Exploit Code
Leaving vuln.today