CVE catalog

CVE-2020-25739

ruby-gon: CVE-2020-25739

[CVE catalog]

Severity
Medium
Published
Source
[NVD] · [CVE record]
EPSS
1.38% · Oct 25, 2026

An issue was discovered in the gon gem before gon-6.4.0 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 does escaping for XSS by default without relying on MultiJson.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianruby-gonbookworm6.4.0-2fixed
Ubunturuby-gon18.046.1.0-1vulnerable
Ubunturuby-gon18.046.1.0-1+deb9u1build0.18.04.1fixed
Ubunturuby-gon16.045.2.3-2vulnerable
Ubunturuby-gon16.046.0.1-1vulnerable
Ubunturuby-gon18.046.1.0-1vulnerable
Ubunturuby-gon18.046.1.0-1+deb9u1build0.18.04.1fixed
Ubunturuby-gon20.046.2.1-1vulnerable
Ubunturuby-gon20.046.3.2-1vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianruby-gonsourcebookworm6.4.0-1not yet assignedNot reported[970938]
Ubunturuby-gondeb18.046.1.0-1+deb9u1build0.18.04.1Not reportedUSN-4560-1Not reported
Ubunturuby-gondeb18.046.1.0-1+deb9u1build0.18.04.1Not reportedUBUNTU-CVE-2020-25739Not reported

[Debian bug #970938]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [ruby-gon]Fixed
    Details (2)

    • 6.4.0-2 · all · bookworm

      Fixed · Fixed: 6.4.0-1

      dsa · ruby-gon · debian · bookworm; dsa · ruby-gon · debian · 12

    • 6.4.0-2 · all · bookworm

      Fixed · Fixed: 6.4.0-1

      dsa · ruby-gon · debian · bookworm; dsa · ruby-gon · debian · 12

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]