Security readout for executives and security teams
Plain-English summary
CVE-2021-38834 is a remote code execution risk in easy-mock versions v1.5.0 through v1.6.0. The public record says attackers can bypass the vm2 sandbox and run arbitrary system commands using crafted JavaScript. No CVSS score or official fixed version is provided in the source bundle.
Executive priority
Treat this as high priority if easy-mock v1.5.0-v1.6.0 is present, because the described impact is remote system command execution. If easy-mock is not deployed, business urgency is low. The next decision point is an asset inventory check.
Technical view
The issue concerns easy-mock’s use of vm2 sandboxing. The CVE description states that special JavaScript can escape the sandbox and execute arbitrary system commands remotely. A public Exploit-DB reference exists, but the provided sources do not document patch details, affected CPEs, or a CWE classification.
Likely exposure
Exposure is most likely where easy-mock v1.5.0-v1.6.0 is deployed, especially if remote users can submit or influence JavaScript evaluated by the service. The affected metadata in the bundle is incomplete; the product and version range come from the CVE title and description.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, so active exploitation is not established here. A public Exploit-DB entry is cited, which increases researcher and attacker awareness, but the bundle does not prove exploitation in the wild.
Researcher notes
Evidence is sparse but direct: the CVE description states vm2 sandbox bypass and arbitrary system command execution. The public reference is Exploit-DB. No official remediation, CVSS vector, CWE, CPE, or vendor advisory is included in the supplied bundle.
Mitigation direction
- Identify any easy-mock deployments and confirm versions.
- Remove or isolate easy-mock v1.5.0-v1.6.0 from untrusted access.
- Check easy-mock project guidance for a patched or safe version.
- Disable workflows that evaluate untrusted JavaScript where possible.
- Monitor hosts for unexpected command execution indicators.
Validation and detection
- Review package manifests and deployment inventories for easy-mock.
- Confirm whether deployed versions are v1.5.0 through v1.6.0.
- Map who can submit JavaScript to the service.
- Check logs for suspicious process execution from easy-mock hosts.
- Verify any compensating access controls are enforced.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-38834 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.exploit-db.com/exploits/50194CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.