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Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package ruby193-rubygem-actionpack.src  (opens in a new tab)

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EPSS
0.63% (71st percentile)

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  • Snyk IDSNYK-RHEL10-RUBY193RUBYGEMACTIONPACKSRC-15133019
  • published29 Jan 2026
  • disclosed18 Mar 2013
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Introduced: 18 Mar 2013

CVE-2013-1857  (opens in a new tab)
CWE-79  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby193-rubygem-actionpack.src package and not the ruby193-rubygem-actionpack.src package as distributed by RHEL.

The sanitize helper in lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x before 3.1.12, and 3.2.x before 3.2.13 does not properly handle encoded : (colon) characters in URLs, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted scheme name, as demonstrated by including a : sequence.