CVE-2026-48618

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Summary

CVECVE-2026-48618
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-26 02:16:52 UTC
Updated2026-06-26 20:18:43 UTC
DescriptionA flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismat. This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.006120000 probability, percentile 0.448110000 (date 2026-06-28)

Problem Types: CWE-176 | CWE-176 CWE-176 Improper Handling of Unicode Encoding

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.0[email protected]Secondary7.7HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
3.0CNADECLARED7.7HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nodejs Node.js 22.22.3 All All All
Application Nodejs Node.js 24.16.0 All All All
Application Nodejs Node.js 26.3.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nodejs Node affected 22.22.3 22.22.3 semver Not specified
CNA Nodejs Node affected 24.16.0 24.16.0 semver Not specified
CNA Nodejs Node affected 26.3.0 26.3.0 semver Not specified

References

ReferenceSourceLinkTags
nodejs.org/en/blog/vulnerability/june-2026-security-releases [email protected] nodejs.org Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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