{"id":"CVE-2013-0156","aliases":["GHSA-jmgw-6vjg-jjwg"],"url":"https://o3.security/vulnerability/CVE-2013-0156","summary":"actionpack Improper Input Validation vulnerability","details":"active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.11 does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion.","published":"2013-01-13T22:55:00Z","modified":"2026-04-10T03:42:36.708776Z","cvss":null,"epss":{"score":0.99449,"percentile":0.99942,"asOf":"2026-09-05"},"cisaKev":null,"exploitsKnown":7,"affectedPackages":[{"ecosystem":"RubyGems","name":"actionpack","fixedVersion":"2.3.15"},{"ecosystem":"RubyGems","name":"actionpack","fixedVersion":"3.0.19"},{"ecosystem":"RubyGems","name":"actionpack","fixedVersion":"3.1.10"},{"ecosystem":"RubyGems","name":"actionpack","fixedVersion":"3.2.11"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01A"},{"type":"ADVISORY","url":"http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2013-0153.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2013-0154.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2013-0155.html"},{"type":"ADVISORY","url":"http://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/"},{"type":"ADVISORY","url":"http://www.debian.org/security/2013/dsa-2604"},{"type":"ADVISORY","url":"http://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.html"},{"type":"ADVISORY","url":"http://www.insinuator.net/2013/01/rails-yaml/"},{"type":"ADVISORY","url":"http://www.kb.cert.org/vuls/id/380039"},{"type":"ADVISORY","url":"http://www.kb.cert.org/vuls/id/628463"},{"type":"ADVISORY","url":"https://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156"},{"type":"ADVISORY","url":"https://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplain"},{"type":"ADVISORY","url":"https://puppet.com/security/cve/cve-2013-0156"},{"type":"ARTICLE","url":"http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html"},{"type":"WEB","url":"http://www.kb.cert.org/vuls/id/380039"},{"type":"WEB","url":"http://www.kb.cert.org/vuls/id/628463"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:42:36.708776Z"}}