Description

Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1 branch prior to 8.1.2.1, the debug exceptions page does not properly escape exception messages. A carefully crafted exception message could inject arbitrary HTML and JavaScript into the page, leading to XSS. This affects applications with detailed exception pages enabled (`config.consider_all_requests_local = true`), which is the default in development. Version 8.1.2.1 contains a patch.

INFO

Published Date :

2026-03-23T22:58:53.577Z

Last Modified :

2026-03-24T18:44:13.020Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33167 vulnerability.

Vendors Products
Rubyonrails
  • Actionpack
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33167.

URL Resource
https://github.com/rails/rails/commit/6752711c8c31d79ba50d13af6a6698a3b85415e0 cve-icon cve-icon cve-icon
https://github.com/rails/rails/releases/tag/v8.1.2.1 cve-icon cve-icon cve-icon
https://github.com/rails/rails/security/advisories/GHSA-pgm4-439c-5jp6 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33167 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33167 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact