{"cve_id":"CVE-2013-0156","published":"2013-01-13T22:55:00.947000+00:00","last_modified":"2026-06-16T23:48:52.040000+00:00","vuln_status":"Modified","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.","cvss_version":"2.0","cvss_vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","base_score":7.5,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"","user_interaction":"NONE","scope":"","impact_c":"PARTIAL","impact_i":"PARTIAL","impact_a":"PARTIAL","cwe_ids":["CWE-20"],"in_kev":false,"kev_date_added":null,"kev_ransomware":false,"epss_score":0.99449,"epss_percentile":0.99943,"cap_rule_version":"0.1.1","stage":"RECON","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"NONE","caps":["INFO_DISCLOSURE","TAMPER"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T08:11:20.952374+00:00","first_seen":"2013-01-13T22:55:00.947000+00:00","kev_first_seen":null,"novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["debian","rubyonrails"],"products":["debian_linux","rails","ruby_on_rails"],"affected":[{"vendor":"debian","product":"debian_linux","ranges":["6.0","7.0"]},{"vendor":"rubyonrails","product":"rails","ranges":["≥ 3.2.0 and < 3.2.11"]},{"vendor":"rubyonrails","product":"ruby_on_rails","ranges":["< 2.3.15","≥ 3.0.0 and < 3.0.19","≥ 3.1.0 and < 3.1.10"]}]}