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CVE-2026-92963 vm2 CVE debrief

CVE-2026-92963 debrief based on the supplied source corpus. The CVE record was published on 2026-09-17T14:18:02.783Z and has not been modified since then. This vulnerability affects vm2 versions before 3.11.2, which fail to restrict access to the VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL global variable, potentially exposing sensitive sandbox internals. Defenders should assess exposure and prioritize verification or mitigation efforts. The CVE record and NVD entry provide details on this vulnerability, emphasizing the need for version verification and potential updates or mitigations.

Vendor
vm2
Product
vm2
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-17
Original CVE updated
2026-09-18
Advisory published
2026-09-17
Advisory updated
2026-09-18

Who should care

Defenders responsible for systems or applications using vm2 versions before 3.11.2 should assess exposure and prioritize verification or mitigation efforts.

Why it matters

CVE-2026-92963 exposes vm2 versions before 3.11.2 to potential information disclosure through internal state access. Defenders should verify versions, assess exposure, and prioritize updates or mitigations.

  • Potential exposure of sensitive sandbox internals
  • Need for verification of vm2 versions in use
  • Possible exploitation attempts targeting vm2 internal state
  • Prioritization of updates or mitigations for vm2 versions before 3.11.2

Technical summary

vm2 versions before 3.11.2 fail to properly restrict access to the VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL global variable, allowing attackers to access internal state objects through globalThis and retrieve sensitive sandbox internals. This vulnerability can lead to potential information disclosure and emphasizes the need for defenders to verify vm2 versions, assess exposure, and prioritize updates or mitigations. The vulnerability details are based on the CVE record and NVD entry, which provide source-grounded technical framing for this issue.

Defensive priority

Defenders should prioritize verifying vm2 versions before 3.11.2 for potential exposure and assess the need for updates or mitigations.

Recommended defensive actions

  • Verify vm2 versions in use and assess exposure to CVE-2026-92963
  • Evaluate the need for updates or mitigations for vm2 versions before 3.11.2
  • Monitor for potential exploitation attempts targeting vm2 internal state

Evidence notes

The CVE record and NVD entry provide details on vm2 versions before 3.11.2 failing to restrict access to the VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL global variable, allowing attackers to retrieve sensitive sandbox internals through globalThis.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-92963 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-92963

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-92963 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-92963

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.