How severe is CVE-2026-48930?

CVE-2026-48930 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-48930 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48930?

CVE-2026-48930 primarily affects Nodejs Node.js. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-48930?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-48930 have an EU (EUVD) identifier?

Yes. CVE-2026-48930 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39614.

When was CVE-2026-48930 published?

CVE-2026-48930 was published on 2026-06-26.

CVE-2026-48930

CVE-2026-48930 is a critical-severity vulnerability in Nodejs Node.js with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39614
Weakness: CWE-284
Affected product: Nodejs Node.js
Published: 2026-06-26
Last modified: 2026-06-26

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**.

Frequently asked questions

What is 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. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
How severe is CVE-2026-48930?: CVE-2026-48930 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-48930 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48930?: CVE-2026-48930 primarily affects Nodejs Node.js. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-48930?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-48930 have an EU (EUVD) identifier?: Yes. CVE-2026-48930 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39614.
When was CVE-2026-48930 published?: CVE-2026-48930 was published on 2026-06-26.

References

https://nodejs.org/en/blog/vulnerability/june-2026-security-releases

Affected products (3)

cpe:2.3:a:nodejs:node.js:22.22.3:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:24.16.0:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:26.3.0:*:*:*:-:*:*:*

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