Security readout for executives and security teams
Plain-English summary
CVE-2017-16099 is a denial-of-service issue in the no-case Node.js module. If an application passes malicious untrusted input into vulnerable versions, processing can block the Node.js event loop and make the service unresponsive.
Executive priority
Treat as a targeted availability risk, not evidence of compromise. Prioritize internet-facing Node.js services or shared APIs where a blocked event loop could disrupt customers.
Technical view
The vulnerability is a regular expression denial of service in no-case versions before 2.3.2, mapped to CWE-400. The described impact is event-loop blocking when crafted untrusted input reaches the module.
Likely exposure
Exposure is most likely in Node.js applications that depend on no-case below 2.3.2 and process user-controlled strings through it, directly or transitively.
Exploitation context
The provided sources do not indicate active exploitation, and the CVE is not listed as KEV. Practical risk depends on whether attacker-controlled input reaches no-case in a reachable application path.
Researcher notes
Evidence is limited to the CVE description and linked advisories. No CVSS score, exploit status, or detailed patch notes are provided in the bundle, so validation should focus on dependency presence and input reachability.
Mitigation direction
- Upgrade no-case to version 2.3.2 or later.
- Refresh lockfiles so transitive dependency resolution removes vulnerable versions.
- Check vendor or maintainer guidance before applying unsupported workarounds.
- Limit untrusted input length before string transformation paths where feasible.
Validation and detection
- Review package manifests and lockfiles for no-case versions below 2.3.2.
- Check dependency trees for transitive no-case usage below 2.3.2.
- Identify routes or jobs passing user-controlled strings into casing helpers.
- Confirm deployed artifacts contain the updated dependency version.
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-2017-16099 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/blakeembrey/no-case/issues/17CVE reference · x_refsource_MISC
- https://nodesecurity.io/advisories/529CVE 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.