{"id":"CVE-2021-28170","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-28170","generatedAt":"2026-10-28T01:51:29.991Z","title":"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.","description":"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":"2021-05-26T22:15:08.000Z","lastModified":"2026-06-17T03:45:57.000Z","status":"Modified","sourceIdentifier":"emo@eclipse.org","cvss":{"version":"3.1","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"},"cwe":["CWE-20","CWE-917"],"affected":["eclipse/jakarta expression language","quarkus/quarkus","oracle/communications cloud native core policy","oracle/weblogic server"],"epss":{"score":0.02132,"percentile":0.81849,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/eclipse-ee4j/el-ri/issues/155","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/","tags":["Exploit","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","tags":["Patch","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://github.com/eclipse-ee4j/el-ri/issues/155","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28170","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}