{"cve":"CVE-2018-1336","nvd":{"published":"2018-08-02T14:29:00.270","modified":"2026-06-17T01:51:02.857","status":"Modified","description":"An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-835"],"references":["http://mail-archives.us.apache.org/mod_mbox/www-announce/201807.mbox/%3C20180722090435.GA60759%40minotaur.apache.org%3E","http://www.securityfocus.com/bid/104898","http://www.securitytracker.com/id/1041375","https://access.redhat.com/errata/RHEA-2018:2188","https://access.redhat.com/errata/RHEA-2018:2189"],"products":["apache:tomcat","canonical:ubuntu_linux","debian:debian_linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_workstation","redhat:jboss_enterprise_application_platform","redhat:jboss_enterprise_web_server"],"source":"nvd","synced_at":"2026-10-19T20:52:03.425131697+00:00"},"epss":{"cve":"CVE-2018-1336","score":0.20354,"percentile":0.97486,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m59c-jpc8-m2x4","url":"https://osv.dev/vulnerability/GHSA-m59c-jpc8-m2x4","summary":"In Apache Tomcat there is an improper handing of overflow in the UTF-8 decoder ","modified":"2024-03-12T05:33:41.550174Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=9.0.0.M9 <9.0.8"],"fixed":["9.0.8"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=8.5.0 <8.5.31"],"fixed":["8.5.31"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=8.0.0RC1 <8.0.51"],"fixed":["8.0.51"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=7.0.28 <7.0.87"],"fixed":["7.0.87"]}]}],"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."]}