{"schema_version":"1.9.0","id":"BIT-tomcat-2021-30640","published":"2024-03-06T11:10:06.381Z","modified":"2026-09-08T08:48:20.942103104Z","aliases":["CVE-2021-30640","GHSA-36qh-35cm-5w2w"],"summary":"Auth weakness in JNDIRealm","details":"A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0 to 10.0.5; 9.0.0 to 9.0.45; 8.5.0 to 8.5.65.","affected":[{"package":{"name":"tomcat","ecosystem":"Bitnami","purl":"pkg:bitnami/tomcat"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.0.0"},{"fixed":"7.0.109"},{"introduced":"8.5.0"},{"fixed":"8.5.66"},{"introduced":"9.0.0"},{"fixed":"9.0.46"},{"introduced":"10.0.0"},{"fixed":"10.0.6"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/tomcat/BIT-tomcat-2021-30640.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N"}]}],"references":[{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r59f9ef03929d32120f91f4ea7e6e79edd5688d75d0a9b65fd26d1fe8%40%3Cannounce.tomcat.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/08/msg00009.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-34"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210827-0007/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4952"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4986"},{"type":"ADVISORY","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30640"}],"database_specific":{"cpes":["cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*"],"severity":"Medium"}}