What is CVE-2011-0446?

CVE-2011-0446 is a medium-severity cross-site scripting (XSS) vulnerability in actionpack (rubygems), affecting versions < 2.3.11. It is fixed in 2.3.11, 3.0.4. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.

Which packages are affected by CVE-2011-0446?

actionpack (rubygems) versions < 2.3.11; actionview (rubygems) versions < 2.3.11.

Is there a fix for CVE-2011-0446?

Yes. CVE-2011-0446 is fixed in 2.3.11, 3.0.4. Upgrade to this version or later.

Is CVE-2011-0446 exploitable, and should I be worried?

Whether CVE-2011-0446 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2011-0446 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2011-0446 in actionpack

Q: Which packages are affected by CVE-2011-0446?

actionpack (rubygems) versions < 2.3.11; actionview (rubygems) versions < 2.3.11.

Q: Is there a fix for CVE-2011-0446?

Yes. CVE-2011-0446 is fixed in 2.3.11, 3.0.4. Upgrade to this version or later.

Q: Is CVE-2011-0446 exploitable, and should I be worried?

Whether CVE-2011-0446 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2011-0446 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2011-0446?

Upgrade: actionpack to 2.3.11 or later, actionpack to 3.0.4 or later, actionview to 2.3.11 or later, actionview to 3.0.4 or later.

Summary

Rails actionpack gem vulnerable to Cross-site Scripting

Multiple cross-site scripting (XSS) vulnerabilities in the mail_to helper in Ruby on Rails before 2.3.11, and 3.x before 3.0.4, when javascript encoding is used, allow remote attackers to inject arbitrary web script or HTML via a crafted (1) name or (2) email value.

Impact

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

Affected versions

actionpack (< 2.3.11) actionpack (>= 3.0.0, < 3.0.4) actionview (< 2.3.11) actionview (>= 3.0.0, < 3.0.4)

Security releases

actionpack → 2.3.11 (rubygems) actionpack → 3.0.4 (rubygems) actionview → 2.3.11 (rubygems) actionview → 3.0.4 (rubygems)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade the following packages to resolve this vulnerability:

actionpack to 2.3.11 or later; actionpack to 3.0.4 or later; actionview to 2.3.11 or later; actionview to 3.0.4 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2011-0446? CVE-2011-0446 is a medium-severity cross-site scripting (XSS) vulnerability in actionpack (rubygems), affecting versions < 2.3.11. It is fixed in 2.3.11, 3.0.4. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
Which packages are affected by CVE-2011-0446?
- actionpack (rubygems) (versions < 2.3.11)
- actionview (rubygems) (versions < 2.3.11)
Is there a fix for CVE-2011-0446? Yes. CVE-2011-0446 is fixed in 2.3.11, 3.0.4. Upgrade to this version or later.
Is CVE-2011-0446 exploitable, and should I be worried? Whether CVE-2011-0446 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2011-0446 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2011-0446?
- Upgrade actionpack to 2.3.11 or later
- Upgrade actionpack to 3.0.4 or later
- Upgrade actionview to 2.3.11 or later
- Upgrade actionview to 3.0.4 or later

Other vulnerabilities in actionpack

CVE-IDSeverityPackage summary

CVE-2026-33167Lowactionpack: Rails has a possible XSS vulnerability in its Action Pack debug exceptions CVE-2024-54133Lowactionpack: Possible Content Security Policy bypass in Action Dispatch CVE-2024-47887Mediumactionpack: Possible ReDoS vulnerability in HTTP Token authentication in Action Controller CVE-2024-41128Mediumactionpack: Possible ReDoS vulnerability in query parameter filtering in Action Dispatch CVE-2024-28103Mediumactionpack: Missing security headers in Action Pack on non-HTML responses