Cross-site Scripting (XSS) Affecting rubygem-actionpack package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-RHEL10-RUBYGEMACTIONPACK-15767950
  • published26 Mar 2026
  • disclosed23 Mar 2026

Introduced: 23 Mar 2026

CVE-2026-33167  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 rubygem-actionpack.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-actionpack package and not the rubygem-actionpack package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1