Critical severity · published Jun 26, 2026
CVE-2026-48930
A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings
9.8
CVSS
0.3%
EPSS
No
On KEV
Description
A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings.
This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node · nodejs
22.22.3 through 22.22.3; 24.16.0 through 24.16.0; 26.3.0 through 26.3.0 · source: vendor
NO
Node.js · Nodejs
22.22.3; 24.16.0; 26.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48930
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48930
Patch
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
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