How severe is CVE-2026-48619?

CVE-2026-48619 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-48619 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48619?

CVE-2026-48619 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-2026-48619?

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

Does CVE-2026-48619 have an EU (EUVD) identifier?

Yes. CVE-2026-48619 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39607.

When was CVE-2026-48619 published?

CVE-2026-48619 was published on 2026-06-26.

CVE-2026-48619

CVE-2026-48619 is a high-severity vulnerability in Nodejs Node.js with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39607
Weakness: CWE-400
Affected product: Nodejs Node.js
Published: 2026-06-26
Last modified: 2026-06-26

Description

A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Out of Memory error on the client. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Frequently asked questions

What is CVE-2026-48619?: A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Out of Memory error on the client. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
How severe is CVE-2026-48619?: CVE-2026-48619 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-48619 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48619?: CVE-2026-48619 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-2026-48619?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-48619 have an EU (EUVD) identifier?: Yes. CVE-2026-48619 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39607.
When was CVE-2026-48619 published?: CVE-2026-48619 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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