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Deno: `fetch()` API sandbox bypass via missing DNS resolution check

🗓️ 16 Jun 2026 19:02:55Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 9 Views

Deno fetch bypasses deny net by not rechecking resolved IPs; fix adds post-resolution IP checks.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
AlpineLinux
CVE-2026-49859
23 Jun 202617:14
alpinelinux
Circl
CVE-2026-49859
29 Jun 202616:07
circl
CVE
CVE-2026-49859
23 Jun 202617:14
cve
Cvelist
CVE-2026-49859 Deno: `fetch()` API sandbox bypass via missing DNS resolution check
23 Jun 202617:14
cvelist
EUVD
EUVD-2026-38541
23 Jun 202617:14
euvd
NVD
CVE-2026-49859
23 Jun 202618:18
nvd
OSV
CVE-2026-49859 Deno: `fetch()` API sandbox bypass via missing DNS resolution check
23 Jun 202617:14
osv
OSV
GHSA-CPGJ-F7G3-2PP2 Deno: `fetch()` API sandbox bypass via missing DNS resolution check
16 Jun 202619:02
osv
Positive Technologies
PT-2026-50153
16 Jun 202600:00
ptsecurity
SUSE CVE
SUSE CVE-2026-49859
19 Jun 202601:50
susecve
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Vulners
Node
denodenoRange2.8.0rust

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16 Jun 2026 19:02Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.15.2
EPSS0.00101
SSVC
9