CVE-2026-9546 (GCVE-0-2026-9546)
Vulnerability from cvelistv5
Published
2026-07-03 06:18
Modified
2026-07-06 16:51
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
Summary
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.
References
Impacted products
Vendor Product Version
curl curl Version: 8.20.0   ≤ 8.20.0
Version: 8.19.0   ≤ 8.19.0
Version: 8.18.0   ≤ 8.18.0
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