CVE-2026-9546 – sending old referer

CVE ID :CVE-2026-9546

Published : July 3, 2026, 6:18 a.m. | 1 hour, 28 minutes ago

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.

Severity: 0.0 | NA

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