MediumVulnerabilityCVE-2026-118661updated 28 Oct 2026, 21:17 UTC
Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookies
Fixed in happy-dom 20.14.6Official, 2 sources
| Severity | MediumCVSS 6.5 of 10 |
|---|---|
| Being exploited? | UnclearNo reports either way yet |
| Fix available? | Yeshappy-dom 20.14.6 · since 28 Oct 2026 |
| How sure is this? | Official, 2 sourcesBacked by an official source |
Are you affected?
| Package / product | Affected versions | Fixed in |
|---|---|---|
| happy-dom · npm | <= 20.14.5 | 20.14.6 |
Timeline
- 28 Oct 2026, 21:06 UTCPublicly disclosed
- 28 Oct 2026, 21:06 UTCReported by GitHub Advisory · GitHub Advisory
- 28 Oct 2026, 21:06 UTCPicked up by Zero Radar
- 28 Oct 2026, 21:17 UTCNVD reported on it · NVD
Sources 2 reports, oldest first
Official vendor, government CERT or advisory database
- Happy DOM has cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookiesGitHub Advisory · 28 Oct 2026, 21:06 UTC
- CVE-2026-118661NVD · 28 Oct 2026, 21:16 UTC
Technical details
- ID
- CVE-2026-118661 · GHSA-5fpq-26gf-qwcr
- CVSS
- 6.5 / 10
- Disclosed
- 28 Oct 2026, 21:06 UTC
- On Zero Radar
- 28 Oct 2026, 21:06 UTC (0 min after disclosure)
- Last change
- 28 Oct 2026, 21:17 UTC
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