{"id":"CVE-2021-28170","aliases":["GHSA-v6w3-2prq-h95f"],"url":"https://o3.security/vulnerability/CVE-2021-28170","summary":"Improper Input Validation in Jakarta Expression Language","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.","published":"2021-05-26T22:15:07.980Z","modified":"2026-08-27T03:49:08.087344632Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"Maven","name":"com.sun.el:el-ri","fixedVersion":"3.0.4"},{"ecosystem":"Maven","name":"org.glassfish:jakarta.el","fixedVersion":"3.0.4"},{"ecosystem":"Maven","name":"org.glassfish:javax.el","fixedVersion":null}],"fix":null,"references":[{"type":"REPORT","url":"https://github.com/eclipse-ee4j/el-ri/issues/155"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"EVIDENCE","url":"https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T03:49:08.087344632Z"}}