CWE-598 Variante Rascunho

Use of GET Request Method With Sensitive Query Strings

This vulnerability occurs when a web application handles sensitive data, like passwords or session tokens, by passing them within the URL's query string using an HTTP GET request.

Definição

What is CWE-598?

This vulnerability occurs when a web application handles sensitive data, like passwords or session tokens, by passing them within the URL's query string using an HTTP GET request.
Using GET requests for sensitive information is risky because the full URL, including the query string, is logged in browser histories, web server logs, and often in the referrer headers sent to third-party sites. This exposes credentials, tokens, or personal data to anyone with access to those logs, making it a common source of data leaks. Attackers can also trick users into clicking malicious links containing pre-filled sensitive parameters. To fix this, always use POST requests (or other appropriate HTTP methods) with the sensitive data placed in the request body, and ensure proper HTTPS encryption is enforced. While SAST and DAST tools can detect this pattern, managing remediation across a large codebase is challenging. An ASPM platform like Plexicus can automatically identify these flaws in your entire application portfolio and use AI to generate specific remediation guidance, streamlining the fix process.
Vulnerability Diagram CWE-598
Sensitive Info in GET Query String Browser GET /reset?token=abc Where the URL ends up Server access.log Browser history Proxy / CDN logs Referer to 3rd parties Bookmark, share, screenshot → token leaks everywhere Token reuse account takeover URL parameters are logged in many places — sensitive data should go in headers/POST body.
Impacto no mundo real

Real-world CVEs caused by CWE-598

  • A discussion platform leaks private information in GET requests.

Como os atacantes a exploram

Trajeto do atacante passo a passo

  1. 1

    Identificar um caminho de código que trata input não confiável sem validação.

  2. 2

    Criar um payload que explora o comportamento inseguro — injeção, traversal, overflow ou abuso de lógica.

  3. 3

    Entregar o payload através de um pedido normal e observar a reação da aplicação.

  4. 4

    Iterar até que a resposta exponha dados, execute código do atacante ou escale privilégios.

Exemplo de código vulnerável

Vulnerable pseudo

A MITRE não publicou um exemplo de código para este CWE. O padrão abaixo é ilustrativo — consulte os Recursos para referências canónicas.

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

Secure pseudo

Seguro 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.
Lista de verificação de prevenção

How to prevent CWE-598

  • Implementation When sensitive information is sent, use the POST method (e.g. registration form).
Sinais de deteção

How to detect CWE-598

Automated Static Analysis High

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

CWE-598

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.

Perguntas frequentes

Frequently asked questions

O que é o CWE-598?

This vulnerability occurs when a web application handles sensitive data, like passwords or session tokens, by passing them within the URL's query string using an HTTP GET request.

Qual a gravidade do CWE-598?

A MITRE não publicou uma classificação de probabilidade de exploração para esta fraqueza. Trate-a como impacto médio até o seu modelo de ameaças provar o contrário.

Que linguagens ou plataformas são afetadas pelo CWE-598?

A MITRE não especificou as plataformas afetadas por este CWE — pode aplicar-se à maioria das stacks de aplicações.

Como posso prevenir o CWE-598?

When sensitive information is sent, use the POST method (e.g. registration form).

Como é que o Plexicus deteta e corrige o CWE-598?

O motor SAST do Plexicus correlaciona a assinatura de fluxo de dados do CWE-598 em cada commit. Quando é encontrada uma correspondência, o nosso agente Codex Remedium abre um PR de correção com o código corrigido, testes e um resumo de uma linha para o revisor.

Onde posso saber mais sobre o CWE-598?

A MITRE publica a definição canónica em https://cwe.mitre.org/data/definitions/598.html. Pode também consultar a documentação da OWASP e do NIST para orientações adjacentes.

Pronto para validar o que importa?

Pronto para validar o que importa.

O Plexicus é Proof-Driven AppSec: achados validados, compreensão contextual e remediação revisada — ancorada em evidência, escopada com você.

Qualificação

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SAMPLE HANDOVER · ILLUSTRATIVE

Sample evidence handover

A trimmed view of what your team receives at the end of an AI Swarm Pentest engagement. Real engagements include full technical evidence, executive narrative, and a remediation plan.

VALIDATED FINDING Evidence attached

Server-Side Request Forgery in webhooks/receiver

demo-project/sample-app · src/webhooks/receiver.py:42

SeverityHigh CVSS 3.18.6 Priority79 Confirmedvia replay

Untrusted caller-supplied URLs reach an internal egress without an allowlist. Replayed in a sandbox against a fresh authorized target — the same control was validated to fail twice.

REVIEWER-READY REMEDIATION Merge-ready PR

Validate the target URL against an allowlist of permitted hostnames. Reject private/internal IP ranges. Enforce HTTPS only.

plexicus/remediation/webhooks-ssrf 3 changed · 0 new files
42resp = requests.get(target_url)
42+if not is_allowed_host(target_url):
43+  raise WebhookRejected(target_url)
44+resp = requests.get(target_url, timeout=5)
Every engagement hands over:
  • Executive briefing
  • Validated findings list
  • Merge-ready PRs
  • Compliance mapping (NIS2 · DORA · CRA)
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