{"id":"UBUNTU-CVE-2021-28170","details":"In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be evaluated as if they were valid.","modified":"2026-05-20T16:04:51.725557559Z","published":"2021-05-26T22:15:00Z","upstream":["CVE-2021-28170"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28170"},{"type":"REPORT","url":"https://github.com/eclipse-ee4j/el-ri/issues/155"},{"type":"REPORT","url":"https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-28170"}],"affected":[{"package":{"name":"jakarta-el-api","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/jakarta-el-api?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libjakarta-el-api-java","binary_version":"4.0.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28170.json"}},{"package":{"name":"jakarta-el-api","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/jakarta-el-api?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjakarta-el-api-java","binary_version":"5.0.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28170.json"}},{"package":{"name":"jakarta-el-api","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/jakarta-el-api?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjakarta-el-api-java","binary_version":"5.0.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28170.json"}},{"package":{"name":"jakarta-el-api","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jakarta-el-api?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.1-1","5.0.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.0.1-1build1","binary_name":"libjakarta-el-api-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28170.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}