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CVE-2020-25739: Cross-site Scripting

September 23, 2020 (updated October 5, 2020)

An issue was discovered in the gon gem for Ruby. MultiJson does not honor the escape_mode parameter to escape fields as an XSS protection mechanism. To mitigate, json_dumper.rb in gon now applies XSS escaping by default without relying on MultiJson.

References

  • nvd.nist.gov/vuln/detail/CVE-2020-25739

Code Behaviors & Features

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Affected versions

All versions before 6.4.0

Fixed versions

  • 6.4.0

Solution

Upgrade to version 6.4.0 or above.

Impact 6.1 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

gem/gon/CVE-2020-25739.yml

Spotted a mistake? Edit the file on GitLab.

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