{"id":"CVE-2013-0156","aliases":["DEBIAN-CVE-2013-0156","DSA-2604-1","EUVD-2017-0264","GHSA-jmgw-6vjg-jjwg","RHSA-2013:0153","UBUNTU-CVE-2013-0156","openSUSE-SU-2024:10188-1"],"status":"published","title":"actionpack Improper Input Validation vulnerability","description":"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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.98979,"percentile":0.99929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-20"],"published":"2013-01-09T00:00:00Z","modified":"2026-09-01T20:03:14Z","exploits":[{"source":"exploitdb","id":"EDB-24019","title":"Ruby on Rails - XML Processor YAML Deserialization Code Execution (Metasploit)","type":"remote","platform":"multiple","date":"2013-01-10","verified":true,"url":"https://www.exploit-db.com/exploits/24019"},{"source":"exploitdb","id":"EDB-27527","title":"Ruby on Rails - Known Secret Session Cookie Remote Code Execution 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