CVE-2026-2717 | BDVDB-2026-328244 Detail
zinouiHTTP Headers
Description#
The HTTP Headers plugin for WordPress is vulnerable to CRLF Injection in all versions up to, and including, 1.19.2. This is due to insufficient sanitization of custom header name and value fields before writing them to the Apache .htaccess file via `insert_with_markers()`. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary newline characters and additional Apache directives into the .htaccess configuration file via the 'Custom Headers' settings, leading to Apache configuration parse errors and potential site-wide denial of service.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact high. Attack vector: network.
Weaknesses#
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
References#
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7716e77f-e899-4046-9421-86fc0c36c245?source=cve
- https://plugins.trac.wordpress.org/browser/http-headers/tags/1.19.2/http-headers.php#L1098
- https://plugins.trac.wordpress.org/browser/http-headers/trunk/http-headers.php#L1098
- https://plugins.trac.wordpress.org/browser/http-headers/tags/1.19.2/http-headers.php#L745
- https://plugins.trac.wordpress.org/browser/http-headers/trunk/http-headers.php#L745
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.