{"cve":"CVE-2013-0156","nvd":{"published":"2013-01-13T22:55:00.947","modified":"2026-06-16T23:48:52.040","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_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01A","http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html","http://rhn.redhat.com/errata/RHSA-2013-0153.html","http://rhn.redhat.com/errata/RHSA-2013-0154.html","http://rhn.redhat.com/errata/RHSA-2013-0155.html"],"products":["debian:debian_linux","rubyonrails:rails","rubyonrails:ruby_on_rails"],"source":"nvd","synced_at":"2026-10-19T20:27:27.940201468+00:00"},"epss":{"cve":"CVE-2013-0156","score":0.99449,"percentile":0.99943,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jmgw-6vjg-jjwg","url":"https://osv.dev/vulnerability/GHSA-jmgw-6vjg-jjwg","summary":"actionpack Improper Input Validation vulnerability","modified":"2024-11-30T05:30:38.293209Z","packages":[{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":["<2.3.15"],"fixed":["2.3.15"]},{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=3.0.0 <3.0.19"],"fixed":["3.0.19"]},{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=3.1.0 <3.1.10"],"fixed":["3.1.10"]},{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=3.2.0 <3.2.11"],"fixed":["3.2.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}