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    CVE-2026-109344

    DOMPurify from 3.4.13 before 3.4.16 contains a cross-site scripting vulnerability because IN_PLACE mode fails to neutralize subtrees detached by afterSanitizeElements or afterSanitizeAttributes hooks. Attackers can supply markup with on* handlers inside a wrapper removed by such hooks, leaving handlers armed on the live DOM to execute script in the victim origin.

    Published:Oct 12, 2026
    Last Modified:Oct 13, 2026
    EPS:Oct 12, 2026
    EPSS Score:0.00188
    CVSS Score:6.1

    Affected Products

    Vendor
    Cure53
    Product
    Dompurify

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-116803 (CVSS 5.1) — DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to keep event hand…
    CVE-2026-116802 (CVSS 5.1) — DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to bypass the SMIL…
    CVE-2026-109345 (CVSS 5.1) — DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitiza…
    CVE-2026-75838 (CVSS 5.1) — DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-r…
    CVE-2026-66010 (CVSS 5.1) — DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELE…
    CVE-2026-65914 (CVSS 5.3) — DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special pa…
    CVE-2026-65913 (CVSS 5.1) — DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers…
    CVE-2026-65912 (CVSS 5.1) — DOMPurify before 3.3.2 contains a URI validation bypass vulnerability when ADD_ATTR is provided as a predicate…
    CVE-2026-65911 (CVSS 5.1) — In DOMPurify through 3.3.3, function predicates supplied via ADD_ATTR or ADD_TAGS to DOMPurify.sanitize() pers…

    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