{"id":"CVE-2020-13942","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13942","generatedAt":"2026-11-05T01:51:20.944Z","title":"It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint.","description":"It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector was found. In Apache Unomi version 1.5.2 scripts are now completely filtered from the input. It is highly recommended to upgrade to the latest available version of the 1.5.x release to fix this problem.","published":"2020-11-24T18:15:12.000Z","lastModified":"2026-06-17T02:53:57.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20","CWE-74"],"affected":["apache/unomi"],"epss":{"score":0.68516,"percentile":0.99338,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 68.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://unomi.apache.org./security/cve-2020-13942.txt","tags":["Mailing List","Vendor Advisory"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2020/11/24/5","tags":["Mailing List","Third Party Advisory"],"source":"security@apache.org"},{"url":"https://advisory.checkmarx.net/advisory/CX-2020-4284","tags":["Exploit","Third Party Advisory"],"source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E","source":"security@apache.org"},{"url":"http://unomi.apache.org./security/cve-2020-13942.txt","tags":["Mailing List","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2020/11/24/5","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://advisory.checkmarx.net/advisory/CX-2020-4284","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13942","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."}