Security readout for executives and security teams
Plain-English summary
CVE-2018-16482 affects the Node.js module mcstatic version 0.0.20 and earlier. It is a directory traversal flaw that could let an attacker read sensitive files from the server filesystem through crafted URL paths. Business urgency depends on whether this small, older package is deployed in internet-facing services.
Executive priority
Prioritize if mcstatic is present in production or internet-facing applications. The main business risk is unauthorized file disclosure. If asset inventory shows no use of mcstatic, this CVE can be closed as not applicable.
Technical view
The issue is classified as CWE-22 path traversal in HackerOne mcstatic <=0.0.20. The CVE description says attackers could access sensitive filesystem information by appending slashes in the URL path. No CVSS score, vendor patch detail, or confirmed exploitation is provided in the supplied sources.
Likely exposure
Exposure is most likely where mcstatic <=0.0.20 is used to serve files in a Node.js application, especially if reachable from untrusted networks. Organizations not using mcstatic are not affected based on current sources.
Exploitation context
The sources describe a remote path traversal condition but do not provide a CVSS score. CISA KEV is false in the provided data, and no cited source confirms active exploitation. Treat exposure as application-specific and validate deployments before escalating.
Researcher notes
Evidence is limited to the CVE record and HackerOne reference. The affected range is mcstatic <=0.0.20. The provided sources do not name a fixed version, patch commit, exploit in the wild, or CVSS vector, so remediation should be guided by package/vendor data.
Mitigation direction
- Inventory Node.js applications for mcstatic dependency usage.
- If mcstatic <=0.0.20 is present, check vendor or package guidance for remediation.
- Replace or remove mcstatic if no maintained fixed version is available.
- Restrict filesystem permissions for services using static file handlers.
- Limit internet exposure for affected applications until remediated.
Validation and detection
- Search dependency manifests and lockfiles for mcstatic.
- Confirm deployed package versions, not only repository versions.
- Identify whether affected services are reachable by untrusted users.
- Review web logs for unusual path traversal attempts.
- Verify remediation by confirming mcstatic is removed, replaced, or updated per guidance.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-16482 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://hackerone.com/reports/330285CVE 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.