CVE-2026-44005: patriksimek vm2 · Prototype Pollution
Affects patriksimek vm2Source CVE Database V5
Not known to be exploited · CVSS 10.0 Critical : upgrade to 3.11.0 as a priority.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.11.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 13 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade patriksimek vm2 to 3.11.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| patriksimekvm2 | Affected
| Fixed in
|
npmvm2pkg:npm/vm2Other threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade vm2 to version 3.11.0 or later, which contains the official fix for this vulnerability. No other mitigations are indicated by the vendor advisory. Patch status is confirmed fixed in 3.11.0.
Description
vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.
References
- github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-44005 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2477205 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50850 (opens in a new tab)