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Servers and applications

CVE-2016-2338

An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.

Severity
Critical 9.8
Published
29 Sept 2022
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
RubyServers and applications · cpe:a:ruby-lang:ruby
  • Version 2.2.2
  • Version 2.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-2338
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-2338