Security readout for executives and security teams
Plain-English summary
CVE-2018-16490 affects the JavaScript module mpath before 0.5.1. It lets attacker-controlled input add properties to Object.prototype, which can unexpectedly change behavior across an application. Business urgency depends on whether vulnerable versions are used in internet-facing or trust-boundary code paths.
Executive priority
Prioritize remediation for externally exposed JavaScript services and high-value applications. If mpath is absent or only present in unreachable tooling, urgency is lower. Because severity scoring is absent, base prioritization on dependency presence and input exposure.
Technical view
mpath <0.5.1 has a prototype pollution flaw allowing arbitrary properties to be injected onto Object.prototype. The CVE record lists CWE-400 and no CVSS score. The public record names the HackerOne report as the primary reference and does not describe active exploitation.
Likely exposure
Node.js applications or services that include mpath versions below 0.5.1, either directly or as a transitive dependency. Exposure is higher where untrusted input reaches mpath-based object path handling.
Exploitation context
No CISA KEV listing is provided and the supplied sources do not state active exploitation. Practical impact is application-dependent because prototype pollution can alter shared JavaScript object behavior when polluted properties influence security or business logic.
Researcher notes
The public data is sparse: affected range, vulnerability class, and HackerOne reference are available, but no CVSS vector or exploitation evidence is included. Validate reachability before assuming business impact.
Mitigation direction
- Upgrade mpath to version 0.5.1 or later.
- Review dependency lockfiles for transitive vulnerable mpath versions.
- Check vendor and package maintainer guidance for any additional remediation.
- Redeploy rebuilt applications after dependency updates.
Validation and detection
- Inventory applications for mpath dependency usage.
- Confirm installed mpath versions are not below 0.5.1.
- Use SCA tooling to detect transitive vulnerable instances.
- Review code paths where untrusted input influences object paths.
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.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-16490 mapping review
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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://hackerone.com/reports/390860CVE 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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.