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7.5Alta

CVE-2026-9546sending old referer

curl curl Publicada: (hace 4 meses)

Descripción

A vulnerability in libcurl caused the HTTP `Referer:` header to persist even when explicitly cleared. While the documentation states that passing NULL to `CURLOPT_REFERER` suppresses the header, the option failed to clear the internal state. As a result, the previous referrer string was erroneously reused and sent in subsequent requests, potentially leaking sensitive information to unintended servers.

Debilidad (CWE): CWE-200

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
curl curl 8.18.0 – < 8.20.1
haxx curl 8.18.0 – < 8.21.0

Referencias y parches

Coincidencias CPE (NVD) (1)
  • cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* ≥ 8.18.0 < 8.21.0

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