Secuno
ENNL
Book demo

CVE-2026-44004

Vm2 denial of service

7.5 HIGHPublic exploitEPSS 0.66%
  1. Published13 May 2026

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. This vulnerability is fixed in 3.11.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Vm2< 3.11.0

Remediation

Fixed in
Vm2≥ 3.11.0

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1078218.0
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until…
CVE-2026-205248.4
In apu, there is a possible memory corruption due to improper input validation. This…
CVE-2026-1031028.6
Pexip Infinity before 41.0 is affected by improper input validation in the signaling…
CVE-2026-1031018.6
Pexip Infinity 30.0 through 40.x before 41.0 is affected by improper input validation…
CVE-2026-824399.8
Description The DRPC server kept a map from function name to request queue and created…
CVE-2026-478919.8
A Spring WebFlux application that relies on the Aalto XML processor to parse XML input…

Frequently asked

Is CVE-2026-44004 being actively exploited?

CVE-2026-44004 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.66%.

How severe is CVE-2026-44004?

CVE-2026-44004 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.66% probability of exploitation.

Which products are affected by CVE-2026-44004?

Affected products include Vm2.

How do I fix CVE-2026-44004?

Upgrade affected software to a fixed version, for example Vm2 3.11.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-44004 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.