CVE-2020-13942

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.

• CWE-20
• CWE-74

• http://unomi.apache.org./security/cve-2020-13942.txtMailing List, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2020/11/24/5Mailing List, Third Party Advisory
• https://advisory.checkmarx.net/advisory/CX-2020-4284Exploit, Third Party Advisory
• https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E
• https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E
• https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E
• https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E
• https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E
• http://unomi.apache.org./security/cve-2020-13942.txtMailing List, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2020/11/24/5Mailing List, Third Party Advisory
• https://advisory.checkmarx.net/advisory/CX-2020-4284Exploit, Third Party Advisory
• https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E
• https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E
• https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E
• https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E
• https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E

Published

Nov 24, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2020-13938Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged loc…5.5
• CVE-2020-13939Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2020-1394An elevation of privilege vulnerability exists in the way th…7.8
• CVE-2020-13940In Apache NiFi 1.0.0 to 1.11.4, the notification service man…5.5
• CVE-2020-13941Reported in SOLR-14515 (private) and fixed in SOLR-14561 (pu…8.8
• CVE-2020-13943If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to…4.3
• CVE-2020-13944In Apache Airflow < 1.10.12, the "origin" parameter passed t…6.1
• CVE-2020-13945In Apache APISIX, the user enabled the Admin API and deleted…6.5
• CVE-2020-13946In Apache Cassandra, all versions prior to 2.1.22, 2.2.18, 3…5.9
• CVE-2020-13947An instance of a cross-site scripting vulnerability was iden…6.1
• CVE-2020-13948While investigating a bug report on Apache Superset, it was …8.8