UpHeron
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Servers and applications

CVE-2021-28965

The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.

Severity
High 7.5
Published
21 Apr 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2.6.7, 2.7.3, 3.0.1
Sources
NVD

Affected software

SoftwareAffected versions
RubyServers and applications · cpe:a:ruby-lang:ruby
  • Every version before 2.6.7
  • From 2.7.0 before 2.7.3
  • From 3.0.0 before 3.0.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-28965
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-28965