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CVE details

CVE-2026-11856

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.

Score
9.8 critical
Published
2026-07-03
Links
NVD · cve.org

Affected ports (2)

PortPackageVersionStatusMaintainer
ftp/linux-c7-curllinux-c7-curl7.29.0_13unaddressedemulation@FreeBSD.org
ftp/linux-rl9-curllinux-rl9-curl7.76.1_13unaddressedemulation@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>linux-c7-curl</name>
	<range><lt>8.21.0</lt></range>
      </package>
      <package>
	<name>linux-rl9-curl</name>
	<range><lt>8.21.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>Successfully using libcurl to do a transfer to a specific HTTP
	origin
(`hostA`) with **Digest** authentication and then changing the
	origin to a
different one (`hostB`) for a second transfer, reusing the
	same handle, makes
libcurl wrongly pass on the `Authorization:` header
	field meant for `hostA`,
to `hostB`.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-11856</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-11856</url>
    </references>
    <dates>
      <discovery>2026-07-03</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>