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Security Advisories

CVE-2026-33167

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-33167

Severity

Unknown
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Summary

Rails has a possible XSS vulnerability in its Action Pack debug exceptions

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.

References

Affected packages


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