Vulnerability advisory

CVE-2020-8264

Published Updated OSV record ↗

Also known as GHSA-35mm-cc6r-8fjp

Severity
  • CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected versions

Repository

Affected commitsFixed by commit
GIT github.com/rails/rails ↗
66cabeda2c46c582d19738e1318be8d59584cc5b to before fe76a95b0d252a2d7c25e69498b720c96b243ea2fe76a95b0d252a2d7c25e69498b720c96b243ea2
Also listed as affected (6)
  • v6.0.3.3
  • v6.0.3.2
  • v6.0.3.1
  • v6.0.3
  • v6.0.3.rc1
  • v6.0.0

Description

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.

References

  • Codex
  • Claude Code
  • VS Code
  • GitHub Copilot
  • Cursor
  • Cline
  • Windsurf
  • Google Anti-gravity
  • OpenCode
  • Pi
  • Gemini CLI
  • Hermes Agent
  • Zed
  • Junie
  • Qwen Code
  • Kiro
  • Kilo Code
  • Factory Droid

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