CVE-2026-121561

    Dashboard / Vulnerabilities / CVE-2026-121561

    CVE-2026-121561

    Published: 3 Nov 2026Last Modified: 8 Nov 2026

    Summary: Label Studio before 1.23.2 SSRF and Token Disclosure via Image Export Downloads

    Details: 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.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121561.json, https://github.com/HumanSignal/label-studio/security/advisories/GHSA-6437-7wc6-gmx5, https://nvd.nist.gov/vuln/detail/CVE-2026-121561, https://www.vulncheck.com/advisories/label-studio-before-1.23.2-ssrf-and-token-disclosure-via-image-export-downloads, https://github.com/HumanSignal/label-studio-sdk/commit/c20c899aaaa302740dacd46a47e5774bb677561f, https://github.com/HumanSignal/label-studio/commit/df96d79183156e556d91825d15fa7721f1145e1a, https://github.com/HumanSignal/label-studio, https://github.com/HumanSignal/label-studio-sdk, 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, 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, https://github.com/HumanSignal/label-studio/blob/1.23.1/label_studio/data_export/models.py#L160-L167

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -df96d79183156e556d91825d15fa7721f1145e1a

    Affected versions

    1.23.1
    1.23.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-121561 | CVE-DB