{"id":"CVE-2010-2227","aliases":["DSA-2207-1","EUVD-2022-3661","GHSA-cxg2-49rq-8gcr","RHSA-2010:0580","RHSA-2010:0581","RHSA-2010:0582","RHSA-2010:0583","RHSA-2010:0584","RHSA-2010:0693"],"status":"published","title":"Apache Tomcat does not properly handle an invalid Transfer-Encoding header","description":"Apache Tomcat 5.5.0 through 5.5.29, 6.0.0 through 6.0.27, and 7.0.0 beta does not properly handle an invalid Transfer-Encoding header, which allows remote attackers to cause a denial of service (application outage) or obtain sensitive information via a crafted header that interferes with \"recycling of a buffer.\"","severity":{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.54779,"percentile":0.99029,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2010-07-13T17:00:00Z","modified":"2026-08-05T10:01:27Z","exploits":[{"source":"metasploit","id":"auxiliary/dos/http/slowloris","title":"Slowloris Denial of Service Attack","type":"auxiliary","date":"2009-06-17","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/dos/http/slowloris"},{"source":"metasploit","id":"auxiliary/dos/http/apache_tomcat_transfer_encoding","title":"Apache Tomcat Transfer-Encoding Information Disclosure and DoS","type":"auxiliary","date":"2010-07-09","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/dos/http/apache_tomcat_transfer_encoding"}],"fixes":[{"ecosystem":"Maven","package":"org.apache.tomcat:tomcat","fixed_in":["7.0.2","5.5.30","6.0.28"],"sources":["ghsa","osv"]},{"ecosystem":"Red Hat:jboss_enterprise_web_server:1::el4","package":"tomcat5","fixed_in":["0:5.5.28-9.patch_01.jdk6.ep5.el4"],"sources":["osv"]},{"ecosystem":"Red Hat:jboss_enterprise_web_server:1::el4","package":"tomcat5-admin-webapps","fixed_in":["0:5.5.28-9.patch_01.jdk6.ep5.el4"],"sources":["osv"]},{"ecosystem":"Red Hat:jboss_enterprise_web_server:1::el4","package":"tomcat5-common-lib","fixed_in":["0:5.5.28-9.patch_01.jdk6.ep5.el4"],"sources":["osv"]},{"ecosystem":"Red Hat:jboss_enterprise_web_server:1::el4","package":"tomcat5-jasper","fixed_in":["0:5.5.28-9.patch_01.jdk6.ep5.el4"],"sources":["osv"]},{"ecosystem":"Red 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