Bug 2450552 (CVE-2026-33167) - CVE-2026-33167 Rails: Action Pack: Action Pack: Cross-Site Scripting (XSS) via improper exception message escaping
Summary: CVE-2026-33167 Rails: Action Pack: Action Pack: Cross-Site Scripting (XSS) vi...
Keywords:
Status: NEW
Alias: CVE-2026-33167
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-24 00:02 UTC by OSIDB Bzimport
Modified: 2026-03-24 11:14 UTC (History)
11 users (show)

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Description OSIDB Bzimport 2026-03-24 00:02:37 UTC 
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.
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