CVE-2026-9546 | BDVDB-2026-345381 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-07-03Record published in the CVE List.
2. Version 22026-09-15Most recent update recorded in the CVE List.