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VulnerabilityPublished Updated

CVE-2026-92949: patriksimek vm2 · Modification of Assumed-Immutable Data (MAID)

Affects patriksimek vm2Source CVE Database V5

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Not known to be exploited · CVSS 6.3 Medium : upgrade to 3.11.7 when convenient.

Data as of 1 Nov 2026, 22:58 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.11.7
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 1 Nov 2026.

What to do

Upgrade vm2 and patriksimek/vm2 to 3.11.7.

Affected software

ProductAffectedFixed in
patriksimekvm2Affected
  • >=3.9.6 <3.11.7
Fixed in
  • 3.11.7
npmpatriksimek/vm2pkg:npm/patriksimek/vm2Other threatsAffected
  • >=3.9.6 <3.11.7
Fixed in
  • 3.11.7

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, avoid running untrusted code in affected vm2 versions or apply additional sandboxing controls.

Description

vm2 versions from 3.9.6 before 3.11.7 fail to properly restrict access to accessor properties on frozen objects, allowing sandboxed scripts to bypass vm.freeze() and vm.readonly() protections. Attackers can use Object.getOwnPropertyDescriptor() or __lookupSetter__() to extract and invoke host object setters directly, mutating properties the embedder explicitly marked read-only.

References

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