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TI-2020-06682 Aliases CVE-2020-8264GHSA-35mm-cc6r-8fjp

Cross-site scripting in https://github.com/rails/rails

Priority MEDIUM 64CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allowing an attacker to send or embed (in another page) a specially crafted URL which can allow the attacker to execute JavaScript in the context of the local application. This vulnerability is in the Actionable Exceptions middleware.

Why it matters now

EPSS 0.66986 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed actionpack (RubyGems): 6.0.3.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—https://github.com/rails/rails6.0.3.4—No fix listedCNA
—actionpack (RubyGems)6.0.0 to before 6.0.3.46.0.3.4Patch availableGHSA-35mm-cc6r-8fjp
  • https://github.com/rails/rails Vendor— Affected 6.0.3.4 Fixed in — No fix listed CNA
  • actionpack (RubyGems) Vendor— Affected 6.0.0 to before 6.0.3.4 Fixed in 6.0.3.4 Patch available GHSA-35mm-cc6r-8fjp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*6.0.0 to before 6.0.3.4VulnerableRails
  • cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.0.3.4 Vulnerable ·Rails

Remediation

  • Fix · GHSA-35mm-cc6r-8fjp actionpack (RubyGems) Fixed in 6.0.3.4 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 2 products
  • CloudForms Management Engine 5
  • Red Hat Satellite 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8264
  2. 2026-10-03 Alias added: GHSA-35mm-cc6r-8fjp

References

Exploit 1

Advisory 2

Other 2

  • TI-2014-00124 Directory traversal vulnerability in actionpack/lib/abstract_controller/base.rb in the… KEVCVSS 3.1HIGH 7.5
  • TI-2019-03828 Path traversal in Rails https://github.com/rails/rails KEVCVSS 3.1HIGH 7.5
  • TI-2016-00672 Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x… KEVCVSS 3.1HIGH 7.5
  • TI-2019-03830 Command injection in Rails https://github.com/rails/rails CVSS 3.1CRITICAL 9.8
  • TI-2020-06581 Code injection in https://github.com/rails/rails CVSS 3.1HIGH 8.8
  • TI-2013-00091 active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before… CVSS 2.0HIGH 7.5
See all 117 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences