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    2 vulnerabilities by style-dictionary

    CVE-2026-54639 (GCVE-0-2026-54639)

    Vulnerability from nvd – Published: 2026-06-24 00:17 – Updated: 2026-06-24 13:02
    VLAI
    Title
    Style Dictionary - Prototype Pollution in convertTokenData utility function
    Summary
    Style Dictionary, a build system for creating cross-platform styles, has a prototype pollution vulnerability starting in version 4.3.0 and prior to version 5.4.4. Impact users have: direct usage of `convertTokenData(tokens, { output: 'object' });`; indirect usage, via using Expand API; and/or indirect usage via SD's transform lifecycle. Impact is high for this when style-dictionary is used as an integration in a NodeJS server application. Impact is moderate for when style-dictionary is used as an integration in a Web application. Impact is low for most common cases where the user of style-dictionary also maintains the tokens, and access is limited via read/write access to the repository/workflows where it is used. A patch has been published in version `5.4.4`. The only known workaround is to sanitize token data first. Whether using DTCG format or old Style Dictionary format, check the token data object recursively for any object keys that include `__proto__`.
    Severity
    8.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
    Assigner
    References
    Impacted products
    Vendor Product Version
    style-dictionary style-dictionary Affected: >= 4.3.0, < 5.4.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-54639 (GCVE-0-2026-54639)

    Vulnerability from cvelistv5 – Published: 2026-06-24 00:17 – Updated: 2026-06-24 13:02
    VLAI
    Title
    Style Dictionary - Prototype Pollution in convertTokenData utility function
    Summary
    Style Dictionary, a build system for creating cross-platform styles, has a prototype pollution vulnerability starting in version 4.3.0 and prior to version 5.4.4. Impact users have: direct usage of `convertTokenData(tokens, { output: 'object' });`; indirect usage, via using Expand API; and/or indirect usage via SD's transform lifecycle. Impact is high for this when style-dictionary is used as an integration in a NodeJS server application. Impact is moderate for when style-dictionary is used as an integration in a Web application. Impact is low for most common cases where the user of style-dictionary also maintains the tokens, and access is limited via read/write access to the repository/workflows where it is used. A patch has been published in version `5.4.4`. The only known workaround is to sanitize token data first. Whether using DTCG format or old Style Dictionary format, check the token data object recursively for any object keys that include `__proto__`.
    Severity
    8.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
    Assigner
    References
    Impacted products
    Vendor Product Version
    style-dictionary style-dictionary Affected: >= 4.3.0, < 5.4.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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