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    4 vulnerabilities by Milkdown

    CVE-2026-57531 (GCVE-0-2026-57531)

    Vulnerability from nvd – Published: 2026-07-24 19:10 – Updated: 2026-07-25 10:30 X_Open Source
    VLAI
    Title
    Milkdown < 7.21.3 DOM XSS via innerHTML Assignment
    Summary
    Milkdown before 7.21.3 contains a DOM cross-site scripting vulnerability in the @milkdown/plugin-emoji package that allows unauthenticated attackers to execute arbitrary JavaScript in the host application's origin by causing a victim to paste attacker-controlled content. The parseDOM.getAttrs handler stores raw innerHTML of pasted span elements with data-type="emoji" without sanitization, and the toMarkdown runner subsequently assigns this unsanitized value directly to a live DOM element's innerHTML, bypassing the DOMPurify sanitization used in the toDOM path, causing payload execution on every markdown serialization cycle.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Milkdown milkdown Affected: 0 , < 7.21.3 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-12 00:00
    Credits
    Katriel Moses
    Show details on NVD website
    To clipboard 

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    CVE-2026-57530 (GCVE-0-2026-57530)

    Vulnerability from nvd – Published: 2026-07-24 19:08 – Updated: 2026-07-25 10:30 X_Open Source
    VLAI
    Title
    Milkdown < 7.21.3 Stored XSS via javascript: URL in link href
    Summary
    Milkdown before 7.21.3 contains a stored cross-site scripting vulnerability in the @milkdown/preset-commonmark and @milkdown/components packages that allows attackers with document write access to execute arbitrary JavaScript in the browser context of any user who opens the document or clicks a rendered link. The parseMarkdown runner stores raw URL values from the remark AST as href mark attributes without URL scheme validation, and the ineffective DOMPurify.sanitize call in edit-view.ts treats the bare URL string as a text node and returns it unchanged, allowing javascript: payloads to pass through the link-tooltip preview component and read-only mode anchor elements unmodified.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Milkdown milkdown Affected: 0 , < 7.21.3 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-12 00:00
    Credits
    Katriel Moses
    Show details on NVD website
    To clipboard 

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    CVE-2026-57531 (GCVE-0-2026-57531)

    Vulnerability from cvelistv5 – Published: 2026-07-24 19:10 – Updated: 2026-07-25 10:30 X_Open Source
    VLAI
    Title
    Milkdown < 7.21.3 DOM XSS via innerHTML Assignment
    Summary
    Milkdown before 7.21.3 contains a DOM cross-site scripting vulnerability in the @milkdown/plugin-emoji package that allows unauthenticated attackers to execute arbitrary JavaScript in the host application's origin by causing a victim to paste attacker-controlled content. The parseDOM.getAttrs handler stores raw innerHTML of pasted span elements with data-type="emoji" without sanitization, and the toMarkdown runner subsequently assigns this unsanitized value directly to a live DOM element's innerHTML, bypassing the DOMPurify sanitization used in the toDOM path, causing payload execution on every markdown serialization cycle.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Milkdown milkdown Affected: 0 , < 7.21.3 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-12 00:00
    Credits
    Katriel Moses
    Show details on NVD website
    To clipboard 

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    CVE-2026-57530 (GCVE-0-2026-57530)

    Vulnerability from cvelistv5 – Published: 2026-07-24 19:08 – Updated: 2026-07-25 10:30 X_Open Source
    VLAI
    Title
    Milkdown < 7.21.3 Stored XSS via javascript: URL in link href
    Summary
    Milkdown before 7.21.3 contains a stored cross-site scripting vulnerability in the @milkdown/preset-commonmark and @milkdown/components packages that allows attackers with document write access to execute arbitrary JavaScript in the browser context of any user who opens the document or clicks a rendered link. The parseMarkdown runner stores raw URL values from the remark AST as href mark attributes without URL scheme validation, and the ineffective DOMPurify.sanitize call in edit-view.ts treats the bare URL string as a text node and returns it unchanged, allowing javascript: payloads to pass through the link-tooltip preview component and read-only mode anchor elements unmodified.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Milkdown milkdown Affected: 0 , < 7.21.3 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-12 00:00
    Credits
    Katriel Moses
    Show details on NVD website
    To clipboard 

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