How severe is CVE-2026-48937?

CVE-2026-48937 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2026-48937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48937?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-48937 have an EU (EUVD) identifier?

Yes. CVE-2026-48937 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37928.

When was CVE-2026-48937 published?

CVE-2026-48937 was published on 2026-06-18 and last updated on 2026-06-22.

CVE-2026-48937

CVE-2026-48937 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-37928
Weakness: CWE-400
Published: 2026-06-18
Last modified: 2026-06-22

Description

A flaw in Node.js HTTP/2 server API can cause servers to keep accepting data even after sending a `GOAWAY` frame. This vulnerability affects two supported release lines: **Node.js 22** and **Node.js 24**.

Frequently asked questions

What is CVE-2026-48937?: A flaw in Node.js HTTP/2 server API can cause servers to keep accepting data even after sending a `GOAWAY` frame. This vulnerability affects two supported release lines: **Node.js 22** and **Node.js 24**.
How severe is CVE-2026-48937?: CVE-2026-48937 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2026-48937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-48937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48937 have an EU (EUVD) identifier?: Yes. CVE-2026-48937 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37928.
When was CVE-2026-48937 published?: CVE-2026-48937 was published on 2026-06-18 and last updated on 2026-06-22.

References

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