CVE-2026-11933 | THREATINT

Description

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.

PUBLISHED Reserved 2026-06-10 | Published 2026-06-12 | Updated 2026-06-12 | Assigner mongodb

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-787: Out-of-bounds Write

Product status

Default status

unaffected

8.3.0 (semver)

affected

8.2.0 (semver)

affected

8.0.0 (semver)

affected

7.0.0 (semver)

affected

6.0 (semver)

affected

5.0 (semver)

affected

4.4.0 (semver)

affected

References

jira.mongodb.org/browse/SERVER-128125

cve.org (CVE-2026-11933)

nvd.nist.gov (CVE-2026-11933)

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