Security readout for executives and security teams
Plain-English summary
CVE-2016-10703 is a denial-of-service flaw in the ecstatic npm package before 2.0.0. A remote user could send specially crafted input that makes the server spend excessive processing time and potentially crash, affecting availability rather than confidentiality or data integrity.
Executive priority
Treat this as an availability risk for internet-facing Node.js services. Prioritize remediation where ecstatic is used on public endpoints or business-critical systems.
Technical view
The issue is described as a regular expression denial of service in lib/ecstatic.js. The vulnerable code path can be triggered remotely through crafted input, causing overload and server crash. The source bundle identifies affected versions as ecstatic before 2.0.0 but does not provide CVSS, CWE, or detailed affected CPE data.
Likely exposure
Exposure is most likely in Node.js services that use ecstatic before 2.0.0 and expose the affected request handling path to untrusted internet or user traffic.
Exploitation context
The supplied sources say remote exploitation is possible for denial of service. They do not show active exploitation, and the CVE is not listed as KEV in the bundle.
Researcher notes
Evidence is clear on package, file, vulnerability class, and fixed version boundary. Evidence is incomplete on CVSS, CWE, exact regex behavior, and known exploitation. Avoid assuming broader products beyond ecstatic usage.
Mitigation direction
- Upgrade ecstatic to version 2.0.0 or later.
- Review Checkmarx and project guidance for any additional vendor recommendations.
- Restart or redeploy services after dependency updates are applied.
- Use process supervision and rate controls to reduce availability impact.
Validation and detection
- Inventory applications and lockfiles for ecstatic dependency versions.
- Confirm deployed artifacts do not include ecstatic before 2.0.0.
- Identify public routes served by ecstatic or dependent static-serving middleware.
- Check monitoring for unexplained Node.js CPU spikes or crashes.
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-2016-10703 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://www.checkmarx.com/advisories/denial-of-service-dos-vulnerability-in-ecstatic-npm-package/CVE reference · x_refsource_MISC
- https://github.com/jfhbrook/node-ecstatic/commit/71ce93988ead4b561a8592168c72143907189f01CVE reference · x_refsource_MISC
- https://advisory.checkmarx.net/advisory/CX-2016-4450CVE 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.