CVE-2021-21265CWE-644

October CMS vulnerable to Potential Host Header Poisoning on misconfigured servers

Medium · published March 10, 2021

CVSS v3.1
6.8
EPSS
2%
Percentile
77.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01748 · 77.7th percentile
Weakness
CWE-644 · Improper Neutralization of HTTP Headers for Scripting Syntax
Published
2021-03-10T21:15Z
EPSS history
Timeline
  • 10 MAR 21:15Z
    October CMS vulnerable to Potential Host Header Poisoning on misconfigured servers
    cvelistv5