How severe is CVE-2015-7579?

CVE-2015-7579 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2015-7579 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-2015-7579?

CVE-2015-7579 affects Rubyonrails Html Sanitizer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-7579?

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

When was CVE-2015-7579 published?

CVE-2015-7579 was published on 2016-02-16 and last updated on 2026-06-17.

CVE-2015-7579

CVE-2015-7579 is a medium-severity vulnerability in Rubyonrails Html Sanitizer with a CVSS 3.x base score of 6.1. 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 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rubyonrails Html Sanitizer
Published: 2016-02-16
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the Rails::Html::FullSanitizer class.

Frequently asked questions

What is CVE-2015-7579?: Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the Rails::Html::FullSanitizer class.
How severe is CVE-2015-7579?: CVE-2015-7579 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2015-7579 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-2015-7579?: CVE-2015-7579 affects Rubyonrails Html Sanitizer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-7579?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-7579 published?: CVE-2015-7579 was published on 2016-02-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rubyonrails:html_sanitizer:*:*:*:*:*:ruby:*:*

More vulnerabilities in Rubyonrails Html Sanitizer

CVE-2018-3741 — Medium (CVSS 6.1): There is a possible XSS vulnerability in all rails-html-sanitizer gem versions below 1.0.4 for Ruby. The gem allows…
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CVE-2015-7578 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem before 1.0.3 for Ruby on Rails 4.2.x and 5.x…

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