{"cve":"CVE-2013-1821","nvd":{"published":"2013-04-09T21:55:01.113","modified":"2026-06-16T23:52:11.147","status":"Modified","description":"lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702525","http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00015.html","http://lists.opensuse.org/opensuse-updates/2013-04/msg00034.html","http://lists.opensuse.org/opensuse-updates/2013-04/msg00036.html"],"products":["ruby-lang:ruby"],"source":"nvd","synced_at":"2026-10-19T20:27:27.940201468+00:00"},"epss":{"cve":"CVE-2013-1821","score":0.06857,"percentile":0.94046,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hgg7-cghq-xhf4","url":"https://osv.dev/vulnerability/GHSA-hgg7-cghq-xhf4","summary":"Ruby vulnerable to denial of service","modified":"2024-11-29T05:38:00.378634Z","packages":[{"ecosystem":"Maven","name":"org.jruby:jruby","purl":"pkg:maven/org.jruby/jruby","ranges":["<1.7.3"],"fixed":["1.7.3"]}]}],"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."]}