This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-9546 →

ALPINE-CVE-2026-9546

A vulnerability in libcurl caused the HTTP `Referer:` header to persist even when explicitly cleared. While the documentation states that passing NULL...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Alpine:v3.23 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"8.18.0"},{"fixed":"8.22.0-r0"}]}]

Alpine:v3.24 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"8.18.0"},{"fixed":"8.21.0-r0"}]}]

References

advisory security.alpinelinux.org