CVE-2026-121561
Label Studio before 1.23.2 SSRF and Token Disclosure via Image Export Downloads
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | humansignal |
| Product | label-studio |
| Published | Nov 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
HumanSignal / label-studio
0 < 1.23.2
HumanSignal / label-studio-sdk
0 < 2.1.2
References
github.com: https://github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5 github.com: https://github.com/HumanSignal/label-studio/commit/df96d79183156e556d91825d15fa7721f1145e1a github.com: https://github.com/HumanSignal/label-studio-sdk/commit/c20c899aaaa302740dacd46a47e5774bb677561f github.com: https://github.com/HumanSignal/label-studio/blob/1.23.1/label_studio/data_export/models.py#L160-L167 github.com: https://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L62-L71 github.com: https://github.com/HumanSignal/label-studio-sdk/blob/2.1.1/src/label_studio_sdk/_extensions/label_studio_tools/core/utils/io.py#L299-L338 vulncheck.com: https://www.vulncheck.com/advisories/label-studio-before-1.23.2-ssrf-and-token-disclosure-via-image-export-downloads
Credits
Michael Holmquist, HASP Labs