CVE-2026-118660
CVE-2026-118660 · Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel="stylesheet" href URLs by default while parsing untrusted HTML on the server because disableIframePageLoading and disableCSSFileLoading default to false. An attacker who controls parsed HTML can therefore cause server-side requests to arbitrary internal or cloud endpoints without an application opt-in and may expose confidential responses or credentials returned by those endpoints. This issue is fixed in version 21.0.0.
CVSS 8.6 · Hoch · EPSS 0,4% · Öffentlicher Exploit · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: node
Betroffene Produkte und Versionen
Originalquellen
- https://github.com/capricorn86/happy-dom/security/advisories/GHSA-c8p4-j97h-3vg8
- https://github.com/capricorn86/happy-dom/pull/2502
- https://github.com/capricorn86/happy-dom/commit/0a99c7525a1d0043e3182843ae33466ab7b19e74
- https://github.com/capricorn86/happy-dom/releases/tag/v21.0.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-118660