Vulnerability intelligence

CVE-2026-11933

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.

CVSS Score

8.8

High

EPSS — Exploit Probability

0.3%

Riskier than 26% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 17, 2026 · latest Jun 17, 2026

Coverage timeline

MongoDB flaws risk unauthenticated crashes and data corruption
securityonline.info · Jun 17, 2026