How severe is CVE-2011-1497?

CVE-2011-1497 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2011-1497?

CVE-2011-1497 affects the following packages: actionpack (RubyGems). Ecosystems affected: RubyGems.

How do I fix CVE-2011-1497?

Update actionpack to 3.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-1497 is resolved across your whole dependency graph.

How do I detect CVE-2011-1497 in my RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for actionpack, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2011-1497 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2011-1497 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2011-1497, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2011-1497?

CVE-2011-1497 has an EPSS (Exploit Prediction Scoring System) score of 1.3%, placing it in the 70th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2011-1497?

CVE-2011-1497 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2011-1497 published, and has it been updated?

CVE-2011-1497 was published on April 22, 2022 and was last updated on January 20, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎

💎 RubyGems

Not in CISA KEV

MEDIUM severity

CVE-2011-1497 — actionpack

MEDIUMFix: rails/rails@61ee344

CVE-2011-1497 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in actionpack. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for actionpack — see the affected versions and patch details below.

Cross site scripting in actionpack Rubygem

Published

Apr 22, 2022

Updated

Jan 20, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs70th percentile — riskier than 70% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

💎actionpack

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

A cross-site scripting vulnerability flaw was found in the auto_link function in Rails before version 3.0.6.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`actionpack`	≥ 3.0.0.rc&&< 3.0.6	3.0.6`bundle update actionpack --conservative`

Affected Products

1 product · 1 configurations

Application

railsrubyonrails

< 3.0.6

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

A cross-site scripting vulnerability flaw was found in the auto_link fun…

openwall.comNVDOct 2021

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for actionpack, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update actionpack to 3.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-1497 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

A cross-site scripting vulnerability flaw was found in the `auto_link` function in Rails before version 3.0.6.

O3 Security · Impact-Aware SCA

Is CVE-2011-1497 in your dependencies?

Find it across RubyGems, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

OpenSSF Scorecard

Package health score

rails

6.2/10

Maintained10/10

Code-Review5/10

Branch-Protection3/10

Assessed Oct 19, 2026

Timeline

First exploit

Oct 22, 2021

Disclosed

Apr 22, 2022

Last updated

Jan 20, 2025

Identifiers

CVE-2011-1497

References

Advisorynvd.nist.gov · CVE 2011 1497 Webgithub.com · 61ee3449674c591747db95f9b3472c5c3bd9e84d Webgithub.com · ab764ecbfea31a3b14323283287e2fc80955ace6 Webgithub.com · CHANGELOG Webgithub.com · CVE 2011 1497.yml Webopenwall.com Packagegithub.com · rails

Related vulnerabilities

This CVE is medium severity; 5 of 8 other CVEs affecting actionpack are rated as high or higher (top: high).

CVE-2026-126076CVE-2026-126083CVE-2026-126067CVE-2026-126073CVE-2026-33167CVE-2024-54133CVE-2024-47887CVE-2024-41128

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedJan 20, 2025