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dompurify 3.4.9: bekannte Sicherheitslücken

Bekannte Sicherheitslücken für dompurify 3.4.9: 7. Vergleichen Sie die unten genannten Korrekturen mit Ihrer installierten Version.

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Sicherheitslücken: 7

  1. CVE-2026-116804

    Mittel · CVSS 5.1EPSS 0,18%Korrektur verfügbar

    DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content

    DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.

    • Auf 3.4.17 aktualisieren
    Veröffentlicht Aktualisiert
  2. CVE-2026-116803

    Mittel · CVSS 5.1EPSS 0,16%Korrektur verfügbar

    DOMPurify before 3.4.17 DOM XSS via IN_PLACE Hook-Detached Subtrees

    DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to keep event handlers armed when an IN_PLACE hook removes a parent or sibling node. Attacker markup in detached subtrees is never walked or neutralized, so handlers like img onerror fire after sanitize() returns, causing DOM XSS.

    • Auf 3.4.17 aktualisieren
    Veröffentlicht Aktualisiert
  3. CVE-2026-116802

    Mittel · CVSS 5.1EPSS 0,22%Korrektur verfügbar

    DOMPurify before 3.4.17 XSS via SMIL attributeName Guard Bypass in XHTML Mode

    DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to bypass the SMIL attributeName=href guard when PARSER_MEDIA_TYPE is application/xhtml+xml, because transformCaseFunc does not lowercase attribute names. Attackers can submit SVG with an animate or set element using attributeName="href" and a javascript: entry in values to execute script when users click the sanitized link.

    • Auf 3.4.17 aktualisieren
    Veröffentlicht Aktualisiert
  4. CVE-2026-109345

    Mittel · CVSS 5.1EPSS 0,25%Korrektur verfügbar

    DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root

    DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.

    • Auf 3.4.16 aktualisieren
    Veröffentlicht Aktualisiert
  5. CVE-2026-75838

    Mittel · CVSS 5.1EPSS 0,39%Korrektur verfügbar

    DOMPurify before 3.4.13 Cross-Site Scripting via IN_PLACE hook

    DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.

    • Auf 3.4.13 aktualisieren
    Veröffentlicht Aktualisiert
  6. CVE-2026-66010

    Mittel · CVSS 5.1EPSS 0,21%Korrektur verfügbar

    DOMPurify before 3.4.12 Hook Bypass via CUSTOM_ELEMENT_HANDLING

    DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.

    • Auf 3.4.12 aktualisieren
    Veröffentlicht Aktualisiert
  7. CVE-2026-65898

    Mittel · CVSS 5.1EPSS 0,21%Korrektur verfügbar

    DOMPurify before 3.4.11 Permanent Attribute Allowlist Pollution via setConfig

    DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements, then submit untrusted content that inherits the polluted allowlist and executes event handlers as stored XSS.

    • Auf 3.4.11 aktualisieren
    Veröffentlicht Aktualisiert

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