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ALPINE-CVE-2026-9546

ALPINE-CVE-2026-9546

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · Fix available

Published
Updated

Stack: system

Affected products and versions

  • curl Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: ≥ 8.18.0, < 8.22.0-r0

    Update to 8.22.0-r0

  • curl Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: ≥ 8.18.0, < 8.21.0-r0

    Update to 8.21.0-r0

Original sources

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