{"id":"BIT-mongodb-2026-11933","summary":"Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion","details":"A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.","aliases":["CVE-2026-11933"],"modified":"2026-09-08T08:48:14.347892862Z","published":"2026-06-23T14:48:21.005Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://jira.mongodb.org/browse/SERVER-128125"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11933"}],"affected":[{"package":{"name":"mongodb","ecosystem":"Bitnami","purl":"pkg:bitnami/mongodb"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.4.0"},{"fixed":"4.4.31"},{"introduced":"5.0.0"},{"fixed":"5.0.34"},{"introduced":"6.0.0"},{"fixed":"6.0.29"},{"introduced":"7.0.0"},{"fixed":"7.0.37"},{"introduced":"8.0.0"},{"fixed":"8.0.26"},{"introduced":"8.2.0"},{"fixed":"8.2.11"},{"introduced":"8.3.0"},{"fixed":"8.3.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mongodb/BIT-mongodb-2026-11933.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}