How severe is CVE-2026-37630?

CVE-2026-37630 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-37630 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-37630?

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-2026-37630 have an EU (EUVD) identifier?

Yes. CVE-2026-37630 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29291.

When was CVE-2026-37630 published?

CVE-2026-37630 was published on 2026-05-11 and last updated on 2026-06-17.

CVE-2026-37630

CVE-2026-37630 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29291
Weakness: CWE-94
Published: 2026-05-11
Last modified: 2026-06-17

Description

An issue in QuickJS-NG v.0.12.1 allows an attacker to execute arbitrary code via the js_mapped_arguments_mark function

Frequently asked questions

What is CVE-2026-37630?: An issue in QuickJS-NG v.0.12.1 allows an attacker to execute arbitrary code via the js_mapped_arguments_mark function
How severe is CVE-2026-37630?: CVE-2026-37630 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-37630 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-37630?: 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-2026-37630 have an EU (EUVD) identifier?: Yes. CVE-2026-37630 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29291.
When was CVE-2026-37630 published?: CVE-2026-37630 was published on 2026-05-11 and last updated on 2026-06-17.

References

https://github.com/quickjs-ng/quickjs/issues/1400

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