CVE-2021-21265 | BDVDB-2026-150256 Detail
octobercmsoctober
Description#
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October before version 1.1.2, when running on poorly configured servers (i.e. the server routes any request, regardless of the HOST header to an October CMS instance) the potential exists for Host Header Poisoning attacks to succeed. This has been addressed in version 1.1.2 by adding a feature to allow a set of trusted hosts to be specified in the application. As a workaround one may set the configuration setting cms.linkPolicy to force.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.
Weaknesses#
- CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax
References#
- https://github.com/octobercms/october/security/advisories/GHSA-xhfx-hgmf-v6vp
- https://github.com/octobercms/library/commit/f29865ae3db7a03be7c49294cd93980ec457f10d
- https://github.com/octobercms/library/commit/f86fcbcd066d6f8b939e8fe897409d152b11c3c6
- https://github.com/octobercms/october/commit/555ab61f2313f45d7d5d138656420ead536c5d30
- https://github.com/octobercms/october/commit/f638d3f78cfe91d7f6658820f9d5e424306a3db0
- https://packagist.org/packages/october/backend
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.