CVE-2026-48930: CWE-284 Improper Access Control - Generic in nodejs node
A vulnerability in Node.js TLS hostname handling allows embedded null characters in hostnames to cause silent authority rebinding due to C-string truncation in resolver bindings. This affects specific versions of Node.js 22, 24, and 26. The issue is classified as improper access control (CWE-284) and has a medium severity rating with a CVSS score of 5.6.
AI Analysis
Technical Summary
CVE-2026-48930 is a vulnerability in Node.js where the TLS hostname processing mishandles embedded null characters. This leads to silent authority rebinding caused by C-string truncation in resolver bindings. The flaw affects Node.js versions 22.22.3, 24.16.0, and 26.3.0. The vulnerability is categorized under CWE-284 (Improper Access Control) and has a CVSS 3.0 base score of 5.6, indicating medium severity. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
The vulnerability can result in improper access control due to silent authority rebinding in TLS hostname resolution. This may allow an attacker to bypass hostname verification checks, potentially leading to information disclosure, integrity loss, or denial of service. The impact is rated as medium severity with limited confidentiality, integrity, and availability impact as per the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor Node.js security advisories for updates. Avoid using affected versions (=22.22.3, =24.16.0, =26.3.0) in sensitive environments until a fix is available.
CVE-2026-48930: CWE-284 Improper Access Control - Generic in nodejs node
Description
A vulnerability in Node.js TLS hostname handling allows embedded null characters in hostnames to cause silent authority rebinding due to C-string truncation in resolver bindings. This affects specific versions of Node.js 22, 24, and 26. The issue is classified as improper access control (CWE-284) and has a medium severity rating with a CVSS score of 5.6.
CVSS v3.0
Score 5.6medium
Affected software
pkg:github/nodejs/nodeRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-48930 is a vulnerability in Node.js where the TLS hostname processing mishandles embedded null characters. This leads to silent authority rebinding caused by C-string truncation in resolver bindings. The flaw affects Node.js versions 22.22.3, 24.16.0, and 26.3.0. The vulnerability is categorized under CWE-284 (Improper Access Control) and has a CVSS 3.0 base score of 5.6, indicating medium severity. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
The vulnerability can result in improper access control due to silent authority rebinding in TLS hostname resolution. This may allow an attacker to bypass hostname verification checks, potentially leading to information disclosure, integrity loss, or denial of service. The impact is rated as medium severity with limited confidentiality, integrity, and availability impact as per the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor Node.js security advisories for updates. Avoid using affected versions (=22.22.3, =24.16.0, =26.3.0) in sensitive environments until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-05-26T15:00:06.427Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3dd65f4853345fc1fa2e2b
Added to database: 06/26/2026, 01:31:11 UTC
Last enriched: 06/26/2026, 01:47:07 UTC
Last updated: 06/26/2026, 01:47:07 UTC
Views: 3
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