CVE-2026-33744: Py Httpx Dns Rebinding Toctou
The application checks an input conditionally but then performs an HTTP request using an independent HTTP client (httpx). This creates a Time-of-Check to Time-of-Use (TOCTOU) vulnerability known as DNS Rebinding. If the check resolves DNS, the IP might change before the HTTP client connects. Secure the HTTP client inherently by enforcing IP checks directly a
Pythongreprules fetch cve-2026-33744-py-httpx-dns-rebinding-toctou --engine opengrepDescription
The application checks an input conditionally but then performs an HTTP request using an independent HTTP client (httpx). This creates a Time-of-Check to Time-of-Use (TOCTOU) vulnerability known as DNS Rebinding. If the check resolves DNS, the IP might change before the HTTP client connects. Secure the HTTP client inherently by enforcing IP checks directly a
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