{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-11933: Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-11933","status":"final","version":"1","initial_release_date":"2026-06-12T01:57:32.014Z","current_release_date":"2026-06-13T03:55:46.393Z","revision_history":[{"date":"2026-06-12T01:57:32.014Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-11933 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-11933"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-11933"},{"category":"external","summary":"jira.mongodb.org","url":"https://jira.mongodb.org/browse/SERVER-128125"}]},"product_tree":{"branches":[{"category":"vendor","name":"MongoDB","branches":[{"category":"product_name","name":"MongoDB","branches":[{"category":"product_version_range","name":">=8.3.0 <=8.3.3","product":{"name":"MongoDB MongoDB >=8.3.0 <=8.3.3","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=8.2.0 <=8.2.10","product":{"name":"MongoDB MongoDB >=8.2.0 <=8.2.10","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=8.0.0 <=8.0.25","product":{"name":"MongoDB MongoDB >=8.0.0 <=8.0.25","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=7.0.0 <=7.0.36","product":{"name":"MongoDB MongoDB >=7.0.0 <=7.0.36","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=6.0 <=6.0.28","product":{"name":"MongoDB MongoDB >=6.0 <=6.0.28","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=5.0 <=5.0.33","product":{"name":"MongoDB MongoDB >=5.0 <=5.0.33","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=4.4.0 <=4.4.30","product":{"name":"MongoDB MongoDB >=4.4.0 <=4.4.30","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-11933","title":"Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"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","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]}]}]}