Security readout for executives and security teams
Plain-English summary
CVE-2016-10518 affects old versions of the Node.js ws WebSocket module. A client could make the server allocate memory through ping handling, risking service instability or denial of service. The bundle does not provide CVSS scoring or evidence of active exploitation.
Executive priority
Address during normal vulnerability remediation, escalating if the affected service is public-facing or business-critical. The main business risk is preventable service disruption from an obsolete dependency.
Technical view
The issue is in ws ping response handling. Ping payloads are echoed in pong frames, but ws converted outbound data to Buffer without type checks. If a number reached Buffer allocation, Node could allocate that many bytes. The affected product is listed as ws node module versions <= 1.0.0.
Likely exposure
Exposure is most likely in Node.js applications that use ws <= 1.0.0 and accept WebSocket connections from untrusted clients, especially internet-facing services.
Exploitation context
The source bundle references public advisories and a gist, but does not establish active exploitation. CISA KEV status is false. Treat this as a denial-of-service style dependency risk rather than a confirmed exploited-in-the-wild issue.
Researcher notes
The bundle maps the flaw to CWE-201, though the described impact is memory allocation and availability. Evidence is limited to the CVE description and references; validate exact fixed versions against ws release notes before closing findings.
Mitigation direction
- Inventory Node.js applications using the ws package.
- Upgrade away from ws <= 1.0.0 after reviewing vendor release guidance.
- Prioritize internet-facing WebSocket services first.
- Restart or redeploy affected services after dependency updates.
- Monitor memory pressure and crashes on WebSocket endpoints.
Validation and detection
- Check package manifests and lockfiles for ws versions <= 1.0.0.
- Confirm deployed artifacts match the remediated dependency version.
- Review SBOM or dependency scanner output for CVE-2016-10518.
- Identify WebSocket endpoints reachable by untrusted clients.
- Verify operational monitoring covers memory exhaustion symptoms.
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-201: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2016-10518 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://github.com/websockets/ws/releases/tag/1.0.1CVE reference · x_refsource_MISC
- https://nodesecurity.io/advisories/67CVE reference · x_refsource_MISC
- https://gist.github.com/c0nrad/e92005446c480707a74aCVE 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.
Insertion of Sensitive Information Into Sent Data
Insertion of Sensitive Information Into Sent Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.