{"cve":"CVE-2012-3544","nvd":{"published":"2013-06-01T14:21:05.750","modified":"2026-10-09T20:17:03.893","status":"Modified","description":"Apache Tomcat 6.x before 6.0.37 and 7.x before 7.0.30 does not properly handle chunk extensions in chunked transfer coding, which allows remote attackers to cause a denial of service by streaming data.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://archives.neohapsis.com/archives/bugtraq/2013-05/0042.html","http://seclists.org/fulldisclosure/2014/Dec/23","http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/coyote/http11/filters/ChunkedInputFilter.java?r1=1476592&r2=1476591&pathrev=1476592","http://svn.apache.org/viewvc?view=revision&revision=1378702","http://svn.apache.org/viewvc?view=revision&revision=1378921"],"products":["apache:tomcat"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2012-3544","score":0.11001,"percentile":0.9587,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qfxv-3ppc-7qg5","url":"https://osv.dev/vulnerability/GHSA-qfxv-3ppc-7qg5","summary":"Apache Tomcat Vulnerable to Denial of Service (DoS) via Improper Handling of chunk extensions","modified":"2025-04-12T00:27:23.089376Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=6.0.0 <6.0.37"],"fixed":["6.0.37"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=7.0.0 <7.0.30"],"fixed":["7.0.30"]}]}],"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."]}