Security readout for executives and security teams
Plain-English summary
CVE-2017-16139 affects the jikes npm file server module. A remote user can use directory traversal in a URL to read files from the server filesystem, limited by the advisory to .htm and .js files. The public data does not provide a CVSS score or confirmed active exploitation.
Executive priority
Treat this as a targeted cleanup item. It is not KEV-listed, but an exposed file server with directory traversal can disclose application code or web content and should not remain internet-accessible.
Technical view
The vulnerability is CWE-22 directory traversal in all versions of the jikes node module. The issue allows filesystem access by placing traversal sequences in the URL, with disclosed access limited to .htm and .js extensions. Available sources do not identify a fixed version or vendor patch.
Likely exposure
Exposure is most likely where the jikes npm module is installed and used to serve files in a Node.js application, especially if internet-facing or reachable by untrusted users.
Exploitation context
The CVE record lists no CISA KEV entry, so active exploitation is not established. The source bundle includes a public proof-of-concept reference, but the available evidence does not show exploitation in the wild.
Researcher notes
Evidence is sparse: no CVSS vector, no fixed version, and limited product metadata. The key validated facts are CWE-22, all listed versions affected, URL-based traversal, and disclosed read scope limited to .htm and .js files.
Mitigation direction
- Inventory applications and lockfiles for the jikes npm module.
- Remove or replace jikes unless vendor guidance identifies a safe version.
- Restrict access to any service using jikes from untrusted networks.
- Run the file server with least-privilege filesystem access.
- Check vendor or npm guidance for updated remediation details.
Validation and detection
- Confirm whether jikes appears in package manifests, lockfiles, or deployed dependency inventories.
- Identify any routes or services that expose jikes to users.
- Review server logs for suspicious directory traversal patterns.
- Verify only intended web-root files are reachable through authorized testing.
- Document compensating controls if the module cannot be removed immediately.
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-2017-16139 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://nodesecurity.io/advisories/476CVE reference · x_refsource_MISC
- https://github.com/JacksonGL/NPM-Vuln-PoC/blob/master/directory-traversal/jikesCVE 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.