How severe is CVE-2012-1099?

CVE-2012-1099 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-1099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1099?

CVE-2012-1099 primarily affects Rubyonrails Rails. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-1099?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-1099 published?

CVE-2012-1099 was published on 2012-03-13 and last updated on 2026-06-16.

CVE-2012-1099

CVE-2012-1099 is a medium-severity vulnerability in Rubyonrails Rails with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rubyonrails Rails
Published: 2012-03-13
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in actionpack/lib/action_view/helpers/form_options_helper.rb in the select helper in Ruby on Rails 3.0.x before 3.0.12, 3.1.x before 3.1.4, and 3.2.x before 3.2.2 allows remote attackers to inject arbitrary web script or HTML via vectors involving certain generation of OPTION elements within SELECT elements.

Frequently asked questions

What is CVE-2012-1099?: Cross-site scripting (XSS) vulnerability in actionpack/lib/action_view/helpers/form_options_helper.rb in the select helper in Ruby on Rails 3.0.x before 3.0.12, 3.1.x before 3.1.4, and 3.2.x before 3.2.2 allows remote attackers to inject arbitrary web script or HTML via vectors involving certain generation of OPTION elements within SELECT elements.
How severe is CVE-2012-1099?: CVE-2012-1099 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-1099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1099?: CVE-2012-1099 primarily affects Rubyonrails Rails. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-1099?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-1099 published?: CVE-2012-1099 was published on 2012-03-13 and last updated on 2026-06-16.

References

Affected products (61)

cpe:2.3:a:rubyonrails:rails:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:beta3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:beta4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:rc:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.1:pre:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.2:pre:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.4:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.5:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.6:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.6:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.7:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.7:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.8:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.8:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.8:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.8:rc4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:rc2:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:rc3:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:rc4:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.9:rc5:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.10:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.10:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.11:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.0.12:rc1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:ruby_on_rails:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:3.1.0:rc1:*:*:*:*:*:*

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