CWE-1395: Dependency on Vulnerable Third-Party Component

Definition

What is CWE-1395?

This vulnerability occurs when your software relies on an external library, framework, or module that contains known security flaws.

Modern software development heavily depends on third-party components—from open-source libraries to commercial SDKs and entire operating systems. While this accelerates development, it introduces risk: your application inherits every security weakness present in those dependencies. Attackers actively scan for applications using vulnerable versions of popular components, as they provide a reliable and often easy path to compromise. Managing this risk requires proactive vigilance. You cannot assume that external code, whether open or closed source, is secure. A vulnerability in a single small library can jeopardize the entire application. Therefore, a core part of your security process must be continuously identifying, tracking, and updating these external dependencies to patch known issues before they can be exploited.

Auswirkungen in der Praxis

Real-world CVEs caused by CWE-1395

Bisher sind in MITREs Katalog keine öffentlichen CVE-Referenzen mit dieser CWE verknüpft.

Wie Angreifer es ausnutzen

Angreiferpfad Schritt für Schritt

1
Identifiziere einen Codepfad, der nicht vertrauenswürdige Eingaben ohne Validierung verarbeitet.
2
Erzeuge eine Payload, die das unsichere Verhalten auslöst — Injection, Traversal, Overflow oder Logik-Missbrauch.
3
Liefere die Payload über einen normalen Request aus und beobachte die Reaktion der Anwendung.
4
Iteriere, bis die Antwort Daten preisgibt, Angreifer-Code ausführt oder Berechtigungen eskaliert.

Verwundbares Codebeispiel

Vulnerable pseudo

MITRE hat kein Codebeispiel für diese CWE veröffentlicht. Das untenstehende Muster ist illustrativ — kanonische Referenzen findest du unter Ressourcen.

Verwundbar pseudo

// Example pattern — see MITRE for the canonical references.
function handleRequest(input) {
  // Untrusted input flows directly into the sensitive sink.
  return executeUnsafe(input);
}

Sicheres Codebeispiel

Secure pseudo

Sicher pseudo

// Validate, sanitize, or use a safe API before reaching the sink.
function handleRequest(input) {
  const safe = validateAndEscape(input);
  return executeWithGuards(safe);
}

What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.

Präventions-Checkliste

How to prevent CWE-1395

Requirements / Policy In some industries such as healthcare [REF-1320] [REF-1322] or technologies such as the cloud [REF-1321], it might be unclear about who is responsible for applying patches for third-party vulnerabilities: the vendor, the operator/customer, or a separate service. Clarifying roles and responsibilities can be important to minimize confusion or unnecessary delay when third-party vulnerabilities are disclosed.
Requirements Require a Bill of Materials for all components and sub-components of the product. For software, require a Software Bill of Materials (SBOM) [REF-1247] [REF-1311].
Architecture and Design / Implementation / Integration / Manufacturing Maintain a Bill of Materials for all components and sub-components of the product. For software, maintain a Software Bill of Materials (SBOM). According to [REF-1247], "An SBOM is a formal, machine-readable inventory of software components and dependencies, information about those components, and their hierarchical relationships."
Operation / Patching and Maintenance Actively monitor when a third-party component vendor announces vulnerability patches; fix the third-party component as soon as possible; and make it easy for operators/customers to obtain and apply the patch.
Operation / Patching and Maintenance Continuously monitor changes in each of the product's components, especially when the changes indicate new vulnerabilities, end-of-life (EOL) plans, etc.

Erkennungssignale

How to detect CWE-1395

Automated Analysis High

For software, use Software Composition Analysis (SCA) tools, which automatically analyze products to identify third-party dependencies. Often, SCA tools can be used to link with known vulnerabilities in the dependencies that they detect. There are commercial and open-source alternatives, such as OWASP Dependency-Check [REF-1312]. Many languages or frameworks have package managers with similar capabilities, such as npm audit for JavaScript, pip-audit for Python, govulncheck for Go, and many others. Dynamic methods can detect loading of third-party components.

CWE-1395

Don't catalog this weakness. Prove it's reachable.

Plexicus turns CWE catalogs into evidence: every CWE-pattern is matched against your real code graph, reach is proven on a sandbox clone, and verified findings ship as reviewed PRs.

Request AI Swarm Pentest

Häufig gestellte Fragen

Frequently asked questions

Was ist CWE-1395?

This vulnerability occurs when your software relies on an external library, framework, or module that contains known security flaws.

Wie gravierend ist CWE-1395?

MITRE hat für diese Schwachstelle keine Exploit-Wahrscheinlichkeit veröffentlicht. Behandle sie als mittlere Auswirkung, bis dein Threat Model anderes belegt.

Welche Sprachen oder Plattformen sind von CWE-1395 betroffen?

MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, Not Technology-Specific.

Wie kann ich CWE-1395 verhindern?

In some industries such as healthcare [REF-1320] [REF-1322] or technologies such as the cloud [REF-1321], it might be unclear about who is responsible for applying patches for third-party vulnerabilities: the vendor, the operator/customer, or a separate service. Clarifying roles and responsibilities can be important to minimize confusion or unnecessary delay when third-party vulnerabilities are disclosed. Require a Bill of Materials for all components and sub-components of the product. For…

Wie erkennt und behebt Plexicus CWE-1395?

Die SAST-Engine von Plexicus erkennt die Datenfluss-Signatur von CWE-1395 bei jedem Commit. Bei einem Treffer öffnet unser Codex-Remedium-Agent einen Fix-PR mit korrigiertem Code, Tests und einer einzeiligen Zusammenfassung für den Reviewer.

Wo erfahre ich mehr über CWE-1395?

MITRE veröffentlicht die kanonische Definition unter https://cwe.mitre.org/data/definitions/1395.html. Für ergänzende Hinweise kannst du auch die OWASP- und NIST-Dokumentation heranziehen.

Verwandte Schwachstellen

Weaknesses related to CWE-1395

CWE-657 Parent

Bereit zu validieren, was zählt.

Plexicus ist Proof-Driven AppSec: validierte Funde, kontextuelles Verständnis und geprüfte Remediation — in Evidenz verankert, mit Ihnen gescoped.

Pentest buchen

Dependency on Vulnerable Third-Party Component

What is CWE-1395?

Real-world CVEs caused by CWE-1395

Angreiferpfad Schritt für Schritt

Vulnerable pseudo

Secure pseudo

How to prevent CWE-1395

How to detect CWE-1395

Don't catalog this weakness. Prove it's reachable.

Frequently asked questions

Weaknesses related to CWE-1395

Violation of Secure Design Principles

Improper Identifier for IP Block used in System-On-Chip (SOC)

Execution with Unnecessary Privileges

Not Failing Securely ('Failing Open')

Unnecessary Complexity in Protection Mechanism (Not Using 'Economy of Mechanism')

Not Using Complete Mediation

Improper Isolation or Compartmentalization

Reliance on a Single Factor in a Security Decision

Insufficient Psychological Acceptability

Further reading

Bereit zu validieren, was zählt.

Prüfen Sie, ob AI Swarm Pentest zu Ihrer Umgebung passt.

Anfrage erhalten. Nächsten Schritt buchen.

Sample evidence handover

Server-Side Request Forgery in `webhooks/receiver`