Happy DOM ECMAScriptModuleCompiler: unsanitized export names are interpolated as executable code

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-33943 · Microsoft / collected KEV context

EUVD-2026-16864

GHSA-6q6h-j7hj-3r64

cve-program · CVE-2026-33943

• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64
• https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8

euvd · EUVD-2026-16864

• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64
• https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8

nvd · CVE-2026-33943

• https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8
• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64
• https://access.redhat.com/security/cve/CVE-2026-33943
• https://bugzilla.redhat.com/show_bug.cgi?id=2452522
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33943.json

osv · GHSA-6q6h-j7hj-3r64

• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64
• https://nvd.nist.gov/vuln/detail/CVE-2026-33943
• https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c
• https://github.com/capricorn86/happy-dom
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8

No related operational record is retained in the current change model.