{"cve":"CVE-2020-27216","nvd":{"published":"2020-10-23T13:15:16.283","modified":"2026-06-17T03:08:57.043","status":"Modified","description":"In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1 thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.0},"cwes":["CWE-378","CWE-379"],"references":["https://bugs.eclipse.org/bugs/show_bug.cgi?id=567921","https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053","https://lists.apache.org/thread.html/r0259b14ae69b87821e27fed1f5333ea86018294fd31aab16b1fac84e%40%3Cissues.beam.apache.org%3E","https://lists.apache.org/thread.html/r07525dc424ed69b3919618599e762f9ac03791490ca9d724f2241442%40%3Cdev.felix.apache.org%3E","https://lists.apache.org/thread.html/r09b345099b4f88d2bed7f195a96145849243fb4e53661aa3bcf4c176%40%3Cissues.zookeeper.apache.org%3E"],"products":["apache:beam","debian:debian_linux","eclipse:jetty","netapp:snap_creator_framework","netapp:snapcenter","netapp:storage_replication_adapter","netapp:vasa_provider","netapp:virtual_storage_console","oracle:communications_application_session_controller","oracle:communications_converged_application_server_-_service_controller","oracle:communications_element_manager","oracle:communications_offline_mediation_controller","oracle:communications_pricing_design_center","oracle:communications_services_gatekeeper","oracle:flexcube_core_banking","oracle:flexcube_private_banking","oracle:jd_edwards_enterpriseone_tools","oracle:siebel_core_-_automation"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-27216","score":0.04352,"percentile":0.91233,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g3wg-6mcf-8jj6","url":"https://osv.dev/vulnerability/GHSA-g3wg-6mcf-8jj6","summary":"Local Temp Directory Hijacking Vulnerability","modified":"2026-09-10T03:48:36.807409437Z","packages":[{"ecosystem":"Maven","name":"org.eclipse.jetty:jetty-webapp","purl":"pkg:maven/org.eclipse.jetty/jetty-webapp","ranges":["<9.4.33.v20201020"],"fixed":["9.4.33.v20201020"]},{"ecosystem":"Maven","name":"org.mortbay.jetty:jetty-webapp","purl":"pkg:maven/org.mortbay.jetty/jetty-webapp","ranges":["<9.4.33"],"fixed":["9.4.33"]},{"ecosystem":"Maven","name":"org.eclipse.jetty:jetty-webapp","purl":"pkg:maven/org.eclipse.jetty/jetty-webapp","ranges":[">=10.0.0.beta1 <10.0.0.beta3"],"fixed":["10.0.0.beta3"]},{"ecosystem":"Maven","name":"org.mortbay.jetty:jetty-webapp","purl":"pkg:maven/org.mortbay.jetty/jetty-webapp","ranges":[">=10.0.0.beta1 <10.0.0.beta3"],"fixed":["10.0.0.beta3"]},{"ecosystem":"Maven","name":"org.eclipse.jetty:jetty-webapp","purl":"pkg:maven/org.eclipse.jetty/jetty-webapp","ranges":[">=11.0.0.beta1 <11.0.0.beta3"],"fixed":["11.0.0.beta3"]},{"ecosystem":"Maven","name":"org.mortbay.jetty:jetty-webapp","purl":"pkg:maven/org.mortbay.jetty/jetty-webapp","ranges":[">=11.0.0.beta1 <11.0.0.beta3"],"fixed":["11.0.0.beta3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}