CVE details
CVE-2026-118372
LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by embedding CR/LF sequences in a certificate's AIA OCSP URI path. Because url2host() copies the path without rejecting control characters and http_open() places it in the POST request line, attackers can inject headers or split OCSP requests sent to the responder host.
- Score
- 6.3 medium
- Published
- 2026-10-28
- Links
- NVD · cve.org · Report wrong data
Matched ports (4)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| security/libressl | libressl | 4.4.0 | unaddressed | brnrd@FreeBSD.org |
| security/libressl | libressl-libtls | 4.4.0 | unaddressed | brnrd@FreeBSD.org |
| security/libressl-devel | libressl-devel | 4.4.0 | unaddressed | brnrd@FreeBSD.org |
| security/libressl-devel | libressl-devel-libtls | 4.4.0 | unaddressed | brnrd@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>libressl</name>
<range><lt>FIXME</lt></range>
</package>
<package>
<name>libressl-libtls</name>
<range><lt>FIXME</lt></range>
</package>
<package>
<name>libressl-devel</name>
<range><lt>FIXME</lt></range>
</package>
<package>
<name>libressl-devel-libtls</name>
<range><lt>FIXME</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>LibreSSL ocspcheck through 4.4.0 contains a CRLF injection
vulnerability that allows attackers to inject HTTP headers by
embedding CR/LF sequences in a certificate's AIA OCSP URI path.
Because url2host() copies the path without rejecting control
characters and http_open() places it in the POST request line,
attackers can inject headers or split OCSP requests sent to the
responder host.</p>
</body>
</description>
<references>
<cvename>CVE-2026-118372</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-118372</url>
</references>
<dates>
<discovery>2026-10-28</discovery>
<entry>2026-10-28</entry>
</dates>
</vuln>